中小学教育资源及组卷应用平台
Unit 6 Grammar
基础篇
一、基础知识夯实
can:
a 表示能力, 中文意思是“__________”，相当于 __________。
b.表示许可，中文意思是“________”, 相当于 _______，较多用于疑问句。
c.表示可能性，can’t中文意思是“_________”。
d. can 的否定形式是_______.过去式______的语气比can更加客气委婉，表示语气时并不代表过去时。
may:
a.表示允许, 中文意思是“________________”相当于 _______ 。
b.表示猜测，暗含的可能性较小, 中文意思是 “___________”。
c. may 的否定式为_________.注意may的否定式不能缩写。且由may构成的一般疑问句的否定回答用________________。
must:
a.表示义务，中文意思是“________”。
b. mustn’t的中文意思是“___________”
c. 表推测，暗含有很大的可能性,用于肯定句，中文意思是“_________”。
d. 注意：由must构成的一般疑问句的否定回答要用_________或________________, 而不用mustn’t。
f. must 与have to 的区别，must表示主观看法，have to表示客观需求，中文意思为___________.
点对点练习
1. He works hard and he’s sure that he _______ pass the exam.
2. — Could I borrow your English book, please — Of course you _______.
3. — _______ I pick the flowers in the park — No, you mustn’t.
4. You can go and ask Sally. She _______ know where Joan has gone.
5. The schoolbag _______ be Tom’s. His name is written on it.
6. Tom ________ come to the party tonight, but I’m not sure.
7. Please speak a little louder so that I ________ hear you.
8.The traffic _______ stop when the lights are red in the street.
9.— May I go to the cinema, Dad — No, you _______. You must finish your homework first.
10.It’s raining hard outside, so I _______ stay at home.
二、单项选择。
1.The designer has tried every possible way to make the robot light, so you _____ worry about its weight..
A. must B. may C. can’t D. needn’t
2.According to the notice, guests at this hotel __________use the sports center at no extra cost.
A. can B. should C. must D. need
3.As middle school students, we follow the public rules wherever we go.
A. would B. should C. might D. could
4.–Mum, may I go to see a film with my cousin
- You _______ go if you have finished your homework.
A. must B. need C. should D. can
5.-Some people don't show their talents at the very beginning.
-I agree. Even Einstein ____________ read until he was seven.
A. can't B. mustn't C. couldn't D. needn't
6.We don’t allow taking magazines out, but you ____________ copy the article you need on the machine over there.
A. can B. must C. should D. would
7.-It's too hot._ ______ I swim in the lake
-No, you____. That's too dangerous!
8.-Can we walk across the road now
-No, we________. We have to wait until the light turns green.
A. couldn't B. needn't C. shouldn't D. mustn't
9.-I went to Mount Wudang with my five friends in one small car last weekend.
-Oh, my God! I think it____ be an uncomfortable trip.
A. must B. can't C. may D. shouldn't
10.-Mom,____I play computer games this evening
-Sure, but you________ finish your homework first.
A. can；must B. can；mustn't C. may；could D. may；can't
三、 用适当的情态动词填空
1. —What __________ I do for you
—I want some bananas.
2. Tom __________ ride a bike, but he can’t drive a car.
3. You are ill, Tom. You __________ see a doctor.
4. Children __________ play basketball in the street.
5. If you are not careful, a car __________ hit you.
6. —__________ I come in
—Yes, you may. Come in, please.
7. A blind man __________ see anything.
8.Nobody_________live without air and water.
9.The book__________ be returned before Saturday.
10.You_________give up smoking at once. It's bad for your health.
11.The train will leave at half past six, so I__________ get there fifteen minutes earlier.
12.You don't________ worry about her. She is much better now.
四、翻译下列句子。
1. 我会讲日语。
2. 你会弹钢琴吗？
3. 我们可以进来吗？是的，你们可以进来。/不，你们不可以进来。
4. 他不会下象棋。
5. 小汽车不能在此左转弯。
6. 我们现在得上学去了。
7. 我必须要7点前先完成作业吗？ 不，没必要。
8. 我可以借几本书？
9. 你必须在一个月内还书。
10. 参观者不能在博物馆里吸烟
提升篇
五、语法填空
Nowadays people use money every day. It is very 1 ___________ (importance) in our life. Without money, you cannot buy anything you want. But I think few people know 2___________ history of money.
Long ago, people did not need money. They 3__________ (live) on wild animals, fruits and other plants. As time passed, people learned 4__________ (grow) plants and keep animals.
Sometimes, families produced more things than they needed, so they started to sell 5__________ (they) to other families. Later, people began to use money, 6___________ it was not the kind of money we use today. They used shells, rice, salt, large stones, etc.
During the 600s BC, people began using coins as money. They soon found that they were easier to carry than other things. Later, 7___________ (country) started to make their own coins.
The Chinese 8__________ (be) the first to use paper money, probably as early as the 11th century. The Italian traveler Marco Polo saw the Chinese using money 9___________ he visited China in the 1200s.
Today, we have many ways 10___________ (buy) things. We not only use coins and paper money, but also use bank cards and telephones. Paying with a card or a telephone is easier and safer than carrying around a lot of “real” money.
六、语法选择
When I was nine years old, I found an advertisement for selling greeting cards in the back of a children’s magazine. I thought to ___1____ that I could do this. I asked my mother to let me send for the box. Two weeks later when the box arrived, I opened the box, got the cards ____2____ rushed out of the house. Three hours later, I returned home ____3___ no card and a pocket full of money shouting “Mama, all the people couldn’t wait to buy my cards!” A seller was born.
When I was twelve years old, my father took me ___4___ Tony Green. I remembered sitting in that dark hall and listening to Mr. Green cheer everybody up. After the speech, I told dad, “Dad, I feel that I can do everything.” When we got to the car, I turned to my father and said, “Dad, I want to make people ____5____ like that.” My father asked me what I meant. “I want to be an encouraging speaker just like Mr. Green.” I replied. A dream was born.
Recently I began following my dream of encouraging ___6____ . I left ____7____ company where I worked for 4 years. Many people were ____8___ why I would leave after earning much money. And they asked why I would do everything for a dream. I loved my old job, my friends and the company I left, but ___9____ was time to get on with my dream.
When I kept working hard on my dream, even during the hard times, the amazing and wonderful things really began to happen. Just as the saying goes, “The world always _____10____ way for the dreamer.”
1. A. I B. me C. my D. myself
2. A. or B. so C. and D. but
3. A. on B. in C. with D. without
4. A. see B. saw C. seeing D. to see
5. A. feel B. feels C. felt D. to feel
6. A. other B. others C. another D. the other
7. A. / B. a C. an D. the
8. A. surprise B. surprised C. surprising D. surprises
9. A. it B. I C. this D. that
10. A. make B. made C. makes D. is making
七、阅读理解
It’s there, but it has no weight, no colour, and you can’t smell it. You can’t see it, but it’s working everywhere in our modern world. Don’t try to touch it! It’s dangerous. It has always existed, but humans learned about it only 500 years ago.
What is it Electricity. It’s powerful and mysterious. Thanks to electricity, you can flick a switch(开关)and have light. Watched a good TV show lately You couldn’t do that without electricity. We cook our food, heat our homes and run our computers using electricity. But what is it, really
Here is a simple description. Everything in the world is made of atoms (原子). Atoms are small. You can fit millions of them on the head of a pin. In every atom, there are electrons (电子), protons (质子) and neutrons (中子). In some atoms, it is possible to move electrons easily from one atom to another. As the electrons move, a current(电流) is created. This is electricity.
Don’t worry if you don’t understand it fully. Just remember that electricity is the result of the movement of electrons. As the electrons move, they create a strong electric charge.
There are many ways to generate electricity. A machine called a generator spins(旋转) rapidly. Water and wind can make a generator spin. So can motors fuelled by oil. As the generator spins, the electrons begin to move. As they move, they create an electric current. Power lines (电线) are built from generators to carry this current to places where people can use it. Along your street, power lines bring electricity right to your door. A wire runs into your house. More wires inside your house are attached to the plugs. Plug in your lamp, the electricity lights up the bulb, and you have light!
It takes a lot of energy to make electricity. Oil is one of the main fuels(燃料) used to power electric generators. Another common fuel is coal. Our planet is running out of these resources, and using them creates a lot of pollution.
In the future, most electricity will be produced using the sun and wind. But for now, be careful about how much electricity you use. Don’t forget to turn off the lights when you leave a room. Every little bit helps.
1. The writer mentions atoms in the third paragraph to .
A. show the relationship between electricity and atoms
B. explain what the electricity is
C. tell us everything in the world is made of atoms
D. describe how the electrons move
2. The underlined word “generate” in Paragraph 5 probably means .
A. move B. understand C. produce D. use
3. According to the passage, the writer probably agrees__________.
A. it’s very easy to make electricity
B. oil and coal are pollution
C. most electricity is produced by sun and wind now
D. everyone should do his best to save electricity
4. What might be the best title for the passage
A. How to make electricity.
B. How electricity helps us.
C. Electricity — A Natural Force.
D. Save the energy; Save the world.
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21世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
Unit 6 Grammar
基础篇
一、基础知识夯实
can:
a 表示能力, 中文意思是“__________”，相当于 __________。
b.表示许可，中文意思是“________”, 相当于 _______，较多用于疑问句。
c.表示可能性，can’t中文意思是“_________”。
d. can 的否定形式是_______.过去式______的语气比can更加客气委婉，表示语气时并不代表过去时。
【答案】能; 会 be able to 可以 may 不可能 can’t could
may:
a.表示允许, 中文意思是“________________”相当于 _______ 。
b.表示猜测，暗含的可能性较小, 中文意思是 “___________”。
c. may 的否定式为_________.注意may的否定式不能缩写。且由may构成的一般疑问句的否定回答用________________。
【答案】可以 can/ could 也许 may not can’t 或mustn’t
must:
a.表示义务，中文意思是“________”。
b. mustn’t的中文意思是“___________”
c. 表推测，暗含有很大的可能性,用于肯定句，中文意思是“_________”。
d. 注意：由must构成的一般疑问句的否定回答要用_________或________________, 而不用mustn’t。
f. must 与have to 的区别，must表示主观看法，have to表示客观需求，中文意思为___________.
【答案】必须 禁止 一定是 needn’t don’t have to 不得不
点对点练习
1. He works hard and he’s sure that he _______ pass the exam.
2. — Could I borrow your English book, please — Of course you _______.
3. — _______ I pick the flowers in the park — No, you mustn’t.
4. You can go and ask Sally. She _______ know where Joan has gone.
5. The schoolbag _______ be Tom’s. His name is written on it.
6. Tom ________ come to the party tonight, but I’m not sure.
7. Please speak a little louder so that I ________ hear you.
8.The traffic _______ stop when the lights are red in the street.
9.— May I go to the cinema, Dad — No, you _______. You must finish your homework first.
10.It’s raining hard outside, so I _______ stay at home.
【答案】1.can 2.can 3.May/Can 4.may/must 5.must 6.may 7.can 8.must 9.needn’t 10.have to
二、单项选择。
1.The designer has tried every possible way to make the robot light, so you _____ worry about its weight..
A. must B. may C. can’t D. needn’t
【答案】D
【解析】句意：设计者已经尝试了所有可能的方法使机器变轻，所以你不必担心它的重量。must必须；一定；may可以；可能；can’t不能；不可能；needn’t不必，没有必要。根据句意The designer has tried every possible way to make the robot light可知，设计者在努力使机器变轻，所以担心是没有必要的。故应选D。
2.According to the notice, guests at this hotel __________use the sports center at no extra cost.
A. can B. should C. must D. need
【答案】A
【解析】句意“根据通知，在这个宾馆的顾客可以不用额外地出钱就能使用体育中心”。A.能，可以；B.应该；C.必须；D.需要。根据句意可知，表示“能使用体育中心、可以使用体育中心”，故选A。
3.As middle school students, we follow the public rules wherever we go.
A. would B. should C. might D. could
【答案】B
【解析】句意：作为中学生，无论去哪里，我们都应该遵守公共规则。A. would将会；B. should应该；C. might可能；D. could可以。should 作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”。故答案为B。
4.–Mum, may I go to see a film with my cousin
- You _______ go if you have finished your homework.
A. must B. need C. should D. can
【答案】D
【解析】句意：——妈妈，我可以和我表妹去看电影吗 ——你可以去如果完成了你的家庭作业。考查情态动词辨析。must必须，强调主观意愿；need需要，指有必要；should应该，表建议；can可以，表许可。本句是条件状语从句，主句表示允许，根据if you have finished your homework.可知选D。
5.-Some people don't show their talents at the very beginning.
-I agree. Even Einstein ____________ read until he was seven.
A. can't B. mustn't C. couldn't D. needn't
【答案】C
【解析】句意：——有些人在一开始并没有展示他们的才能。——我同意。爱因斯坦甚至直到七岁才识字。考查情态动词辨析。can't 不能，表示没有能力，couldn't是其过去式；mustn't不能，表禁止；needn't不需要，指没有必要。根据Some people don't show their talents at the very beginning.可知七岁前几乎没有能力读书，根据until he was seven可知用一般过去时，故选C。
6.We don’t allow taking magazines out, but you ____________ copy the article you need on the machine over there.
A. can B. must C. should D. would
【答案】A
【解析】句意：我们不允许带杂志出去，但是你可以在那边的机器上复印你需要的文章。考查情态动词辨析。A. can可以、能够；B. must必须，一定；C. should应该；D. would将会。根据语境：我们不允许带杂志出去，但是你_____在那边的机器上复印你需要的文章。结合选项可知can符合题意，故答案选A。
7.-It's too hot._ ______ I swim in the lake
-No, you____. That's too dangerous!
A. Should; can't B. Need; mustn't C. Must; needn't D. Could; can't
【答案】D
【解析】考查情态动词的辨析。should表示“应该，应当”；must表示“必须”；need意为“需要”；mustn’t表示“禁止，不允许”；needn't意为“不需要”，一般用来回答以must开头的一般疑问句；could表示“能，可以”，语气更委婉；can't表示“不能”。由句意“——太热了，我能在湖里游泳吗？——不，你不能。那太危险了！”可知，第一空用could向对方提出请求；第二空表示拒绝，故选D
8.-Can we walk across the road now
-No, we________. We have to wait until the light turns green.
A. couldn't B. needn't C. shouldn't D. mustn't
【答案】D
【解析】考查情态动词。句意：——现在我们可以过马路吗？——不，不允许。我们必须等到交通灯变绿。Couldn’t不可以；needn't没必要；shouldn't不应该；mustn't禁止，不允许。结合语境“Can we...？”和下文“我们必须等到交通灯变绿”可知答案。故选D
9.-I went to Mount Wudang with my five friends in one small car last weekend.
-Oh, my God! I think it____ be an uncomfortable trip.
A. must B. can't C. may D. shouldn't
【答案】A
【解析】考查情态动词的用法。句意：——上周末我和五位朋友开小汽车去了武当山。——哦，我的天哪！我认为那一定是一次不舒适的旅行。must一定；can't不可能；may可能；shouldn't不应该。根据句意，表示肯定的猜测用must。故选A。
10.-Mom,____I play computer games this evening
-Sure, but you________ finish your homework first.
A. can；must B. can；mustn't C. may；could D. may；can't
【答案】A
【解析】考查情态动词辨析。句意：——妈妈，今天晚上我能玩电脑游戏吗？——当然，但是你必须先完成你的家庭作业。根据Sure，可知是回答请求，结合but 可知“必须要先完成作业”。故选A。
三、 用适当的情态动词填空
1. —What __________ I do for you
—I want some bananas.
2. Tom __________ ride a bike, but he can’t drive a car.
3. You are ill, Tom. You __________ see a doctor.
4. Children __________ play basketball in the street.
5. If you are not careful, a car __________ hit you.
6. —__________ I come in
—Yes, you may. Come in, please.
7. A blind man __________ see anything.
8.Nobody_________live without air and water.
9.The book__________ be returned before Saturday.
10.You_________give up smoking at once. It's bad for your health.
11.The train will leave at half past six, so I__________ get there fifteen minutes earlier.
12.You don't________ worry about her. She is much better now.
【答案】1.can 2.can 3.must 4.mustn’t 5.may 6.May/can 7.can’t 8.can’t 9.must 10.must 11.must 12.have to
四、翻译下列句子。
1. 我会讲日语。
【答案】I can speak Japanese
2. 你会弹钢琴吗？
【答案】Can you play the piano
3. 我们可以进来吗？是的，你们可以进来。/不，你们不可以进来。
【答案】Can / May we come in Yes, you may. /No. You can’t.
4. 他不会下象棋。
【答案】He can’t play chess.
5. 小汽车不能在此左转弯。
【答案】Cars can’t / mustn’t turn left here.
6. 我们现在得上学去了。
【答案】We must go to school now.
7. 我必须要7点前先完成作业吗？ 不，没必要。
【答案】Must I finish the homework first before 7 No，you needn’t
8. 我可以借几本书？
【答案】How many books can / may I borrow
9. 你必须在一个月内还书。
【答案】You must return the books in a month.
10. 参观者不能在博物馆里吸烟
【答案】Visitors can’t / mustn’t smoke in the museum.
提升篇
五、语法填空
Nowadays people use money every day. It is very 1 ___________ (importance) in our life. Without money, you cannot buy anything you want. But I think few people know 2___________ history of money.
Long ago, people did not need money. They 3__________ (live) on wild animals, fruits and other plants. As time passed, people learned 4__________ (grow) plants and keep animals.
Sometimes, families produced more things than they needed, so they started to sell 5__________ (they) to other families. Later, people began to use money, 6___________ it was not the kind of money we use today. They used shells, rice, salt, large stones, etc.
During the 600s BC, people began using coins as money. They soon found that they were easier to carry than other things. Later, 7___________ (country) started to make their own coins.
The Chinese 8__________ (be) the first to use paper money, probably as early as the 11th century. The Italian traveler Marco Polo saw the Chinese using money 9___________ he visited China in the 1200s.
Today, we have many ways 10___________ (buy) things. We not only use coins and paper money, but also use bank cards and telephones. Paying with a card or a telephone is easier and safer than carrying around a lot of “real” money.
【答案】1. important 2. the 3. lived 4. to grow 5. them 6. but 7 countries 8. were 9. when 10. to buy
六、语法选择
When I was nine years old, I found an advertisement for selling greeting cards in the back of a children’s magazine. I thought to ___1____ that I could do this. I asked my mother to let me send for the box. Two weeks later when the box arrived, I opened the box, got the cards ____2____ rushed out of the house. Three hours later, I returned home ____3___ no card and a pocket full of money shouting “Mama, all the people couldn’t wait to buy my cards!” A seller was born.
When I was twelve years old, my father took me ___4___ Tony Green. I remembered sitting in that dark hall and listening to Mr. Green cheer everybody up. After the speech, I told dad, “Dad, I feel that I can do everything.” When we got to the car, I turned to my father and said, “Dad, I want to make people ____5____ like that.” My father asked me what I meant. “I want to be an encouraging speaker just like Mr. Green.” I replied. A dream was born.
Recently I began following my dream of encouraging ___6____ . I left ____7____ company where I worked for 4 years. Many people were ____8___ why I would leave after earning much money. And they asked why I would do everything for a dream. I loved my old job, my friends and the company I left, but ___9____ was time to get on with my dream.
When I kept working hard on my dream, even during the hard times, the amazing and wonderful things really began to happen. Just as the saying goes, “The world always _____10____ way for the dreamer.”
1. A. I B. me C. my D. myself
2. A. or B. so C. and D. but
3. A. on B. in C. with D. without
4. A. see B. saw C. seeing D. to see
5. A. feel B. feels C. felt D. to feel
6. A. other B. others C. another D. the other
7. A. / B. a C. an D. the
8. A. surprise B. surprised C. surprising D. surprises
9. A. it B. I C. this D. that
10. A. make B. made C. makes D. is making
【答案】1. D 2. C 3. C 4. D 5. A 6. B 7. D 8. B 9. A 10. C
【解析】本文介绍了作者追逐理想的故事。
1.句意：我自己想，我能做这个。
I我，主格；me我，宾格；my我的，形容词性物主代词；myself我自己，反身代词。think to oneself表示“心想”。故选D。
2.句意：两周以后，当盒子到了时，我打开盒子，拿着卡片，冲出屋。
or或者；so因此；and和；but但是。根据“got the cards”和“rushed out of the house. ”可知此处表顺承关系。故选C。
3.句意：三个小时后，我回到家，手里没有卡片，而是一兜子钱。
on在……上；in在……里面；with和；without没有。根据“a pocket full of money shouting, ‘Mama, all the people couldn’t wait to buy my cards!’”可知作者把卡片卖了，变成了钱，用with表伴随。故选C。
4.句意：在我十二岁的时候，我父亲带我去见托尼·格林。
see看见，动词原形；saw看见，动词过去式；seeing看见，现在分词；to see看见，动词不定式。take sb to do sth“带某人做某事”，固定短语，不定式作宾语补足语。故选D。
5.句意：爸爸，我想让人们有那种感觉。
feel感觉，动词原形；feels感觉，动词三单形式；felt感觉，动词过去式；to feel感觉，动词不定式。make sb do sth“使某人做某事”，用省略to的动词不定式作宾语补足语。故选A。
6.句意：最近我开始追随我的梦想，鼓励别人。
other其他的，后接名词；others其他的人或物；another泛指三者以上的另一个；the other特指两者之间的另一个。空后没有名词，用others表示“其他人”。故选B。
7.句意：我离开我工作四年的公司。
/零冠词；a不定冠词，表泛指，用于辅音音素前；an不定冠词，表泛指，用于元音音素前；the定冠词，表特指。根据“...where I worked for 4 years.”可知此处特指作者工作四年的公司，用定冠词the。故选D。
8.句意：很多人都很惊讶为什么我在赚了很多钱后会离开。
surprise使惊讶，动词原形；surprised感到惊讶的；surprising令人感到惊讶的；surprises使惊讶。空处应填形容词作表语，修饰people（人），用surprised，故选B。
9.句意：我热爱我以前的工作、我的朋友和我离开的公司，但我实现梦想的时机已经成熟。
it它；I我；this这；that那。it is/was time to do sth表示“该到做某事的时间了”，固定句型。故选A。
10.句意：世界总梦想者让路。
make使，动词原形；made过去式；makes第三人称单数；is making现在进行时结构。此句是谚语，用一般现在时，主语是第三人称单数，谓语动词用动词三单makes。故选C。
七、阅读理解
It’s there, but it has no weight, no colour, and you can’t smell it. You can’t see it, but it’s working everywhere in our modern world. Don’t try to touch it! It’s dangerous. It has always existed, but humans learned about it only 500 years ago.
What is it Electricity. It’s powerful and mysterious. Thanks to electricity, you can flick a switch(开关)and have light. Watched a good TV show lately You couldn’t do that without electricity. We cook our food, heat our homes and run our computers using electricity. But what is it, really
Here is a simple description. Everything in the world is made of atoms (原子). Atoms are small. You can fit millions of them on the head of a pin. In every atom, there are electrons (电子), protons (质子) and neutrons (中子). In some atoms, it is possible to move electrons easily from one atom to another. As the electrons move, a current(电流) is created. This is electricity.
Don’t worry if you don’t understand it fully. Just remember that electricity is the result of the movement of electrons. As the electrons move, they create a strong electric charge.
There are many ways to generate electricity. A machine called a generator spins(旋转) rapidly. Water and wind can make a generator spin. So can motors fuelled by oil. As the generator spins, the electrons begin to move. As they move, they create an electric current. Power lines (电线) are built from generators to carry this current to places where people can use it. Along your street, power lines bring electricity right to your door. A wire runs into your house. More wires inside your house are attached to the plugs. Plug in your lamp, the electricity lights up the bulb, and you have light!
It takes a lot of energy to make electricity. Oil is one of the main fuels(燃料) used to power electric generators. Another common fuel is coal. Our planet is running out of these resources, and using them creates a lot of pollution.
In the future, most electricity will be produced using the sun and wind. But for now, be careful about how much electricity you use. Don’t forget to turn off the lights when you leave a room. Every little bit helps.
1. The writer mentions atoms in the third paragraph to .
A. show the relationship between electricity and atoms
B. explain what the electricity is
C. tell us everything in the world is made of atoms
D. describe how the electrons move
2. The underlined word “generate” in Paragraph 5 probably means .
A. move B. understand C. produce D. use
3. According to the passage, the writer probably agrees__________.
A. it’s very easy to make electricity
B. oil and coal are pollution
C. most electricity is produced by sun and wind now
D. everyone should do his best to save electricity
4. What might be the best title for the passage
A. How to make electricity. B. How electricity helps us.
C. Electricity — A Natural Force. D. Save the energy; Save the world.
【答案】1．B 2．C 3．D 4．A
【解析】本文介绍了什么是电，以及发电有很多种方法，提倡节约用电。
1．细节理解题。根据最后一句“This is electricity.”结合本段内容可知“作者在第三段提到原子来解释电是什么”。故选B。
2．词意猜测题。move移动；understand理解，领会；produce产生，制造；use使用。根据下文“A machine called a generator spins(旋转) rapidly. Water and wind can make a generator spin. So can motors fuelled by oil. As the generator spins, the electrons begin to move. As they move, they create an electric current.”可知此句“There are many ways to generate electricity.”句意是：有很多种发电方法。故“generate”意思是“产生，制造”。故选C。
3．推理判断题。根据最后一段中“But for now, be careful about how much electricity you use. Don’t forget to turn off the lights when you leave a room. Every little bit helps.”可知作者同意“每个人都应该尽力节约用电”。故选D。
4．主旨大意题。本文介绍了什么是电，以及发电有很多种方法。可知这篇文章最好的标题是《如何发电》。故选A。
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