北师大版英语九年级上册Unit 3 Creativity 重点句型导学案（含答案解析）

初中英语 重点句型（Unit 3 Creativity）
1. 掌握重点句型的结构；
2. 掌握连词的用法。

重点：连词since, because, as, as well as的用法
难点：各个连词用法的差异。
知识梳理：
一、重点句型
【句型学习】
1. Since many of Da Vinci’s inventions were far ahead of their time...
由于达?芬奇的很多发明远远领先了他们的时代……
句中since引导原因状语从句，这样的连词还有because, as等。
(1) because作从属连词，引导原因状语从句，语气最强，表示直接原因，用于回答why问句。because引导的原因状语从句一般在主句之后，也可单独存在。
He was late because he got up late. 他迟到了，因为他起床晚了。
—Why are you late?你为什么来晚了？
—Because I missed the bus.因为我错过了公共汽车。
(2) since作从属连词，引导原因状语从句，语气较because弱，意为“因为，既然”。侧重主句，从句表示显然或已知的理由。since引导的从句一般放在主句之前。
Since everyone is here, let’s discuss the problem.
既然大家都来了，我们就讨论一下这个问题吧。
(3) as 作从属连词，意为“由于，鉴于”，语气最弱。
As she is kind，we all like her. 因为她善良，我们都喜欢她。
I didn’t go to the party not _________ the weather, but _________ I didn’t feel well.
A. because of; because B. because; because of
C. because; because D. because of; because of
答案：A
思路分析：句意：我没有去参加这个聚会不是因为天气，而是因为我的身体感觉不舒服。分析because of和because的区别：because of可视为一个介词，其后加名词/代词/动名词（短语）；而because是一个连词，后面引导一个成分完整的原因状语从句（有自己的主谓宾语等）。根据本句：the weather就是一个名词短语“天气”，所以用介词短语because of；I didn’t feel well就是一个完整的句子，所以用连词because，故选A。
2. Not all of Da Vinci’s plans worked out as well as he wished.
并不是达·芬奇所有的设计都如他所愿取得成功。
as well as中，as 作表示比较的连词短语，引导比较状语从句，可用来连接两个相同的成分，如名词、形容词等，但强调的重点在前面，意思为“和……一样好”。
Mike looks as well as he did three years ago. 迈克看上去和三年前一样好。
She sings as well as she dances. 她唱歌和跳舞一样好。
(1) as well as还可以作介词短语，连接两个并列的成分，意为“除……之外，也，还”。
My sister is clever as well as beautiful. 我的妹妹既漂亮又聪明。
(2) as well as连接两个主语时，谓语动词的形式与其前的主语保持一致。
Helen as well as I is watching TV now. 现在我和海伦正在看电视。
Liu Ying is good at singing. She sings __________ the famous singer.
A. as well as B. as good as C. as better as D. as the best as
答案：A
思路分析：句意：刘莹擅长唱歌。她唱得跟著名歌手一样好。as +形容词或副词原级 + as，表示前者与后者在某方面一样。本题中所填词修饰动词sings作状语，应该用副词。所以选A。
用because, because of, since, as, as well as 完成句子。
1. She didn’t go to school _______ she was ill.
2. everybody is here, let’s begin.
3. it was raining, we all stayed at home instead of going to the park.
4. He failed his exam his carelessness.
5. My father has experience knowledge.
6. Judy has made lots of friends she came to China.
7. Mary speaks French her French teacher does.
答案：1. because 2. Since 3. As 4. because of 5. as well as 6. since 7. as well as
二、课文朗读
Leonardo da Vinci was born on April 15th, 1452 in a northern Italian town. He is considered one of the greatest painters of all time. He is still famous today because of the Mona Lisa and other well-known paintings. However, not many people know he was also an engineer and an inventor.
Da Vinci was interested in science and art, and he was a pioneer in many areas. He drew plans and pictures and wrote about his many ideas in his diaries. Since he died on May 2nd, 1519, people have been learning from them. They included plans for an adding machine, bridges as well as drawings of musical instruments, flying machines and machines for war, such as guns.
Since many of Da Vinci’s inventions were far ahead of their time, they were only tested hundreds of years later. Because he couldn’t test them, not all of da Vinci’s plans worked out as well as he wished. However, some of his ideas worked well. For example, one of his bridges was finally built 500 years after it was drawn and flying machines, such as helicopters, are very common now.
Some think Da Vinci wanted to keep his ideas secret as he wrote his diary in code. Others think it was just easier for him to write this way because he was left-handed. Either way, da Vinci’s diaries can only be read with a mirror because everything is written backwards. As it took some time to translate the diaries, they were published more than 150 years after his death.
同步练习：
（答题时间：25分钟）
一、根据课文内容，用 because，because of, since, as, as well as 填空。
1. He is still famous today the Mona Lisa and other well-known paintings.
2. he died on May 2nd, 1519, people have been learning from them.
3. They included plans for an adding machine, bridges drawings of musical instruments, flying machines and machines for war, such as guns.
4. many of Da Vinci’s inventions were far ahead of their time, they were only tested hundreds of years later.
5. he couldn’t test them, not all of Da Vinci’s plans worked out he wished.
6. Some think Da Vinci wanted to keep his ideas secret he wrote his diary in code.
7. Others think it was just easier for him to write this way he was left-handed.
8. Either way, da Vinci’ diaries can only be read with a mirror everything is written backwards.
9. it took some time to translate the diaries, they were published more than 150 years after his death.
二、阅读理解。
A
阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。每个选项只能用一次。
Do you ever feel bad because you made a mistake? Remember, some of our favorite foods 1 .
Sandwiches
One day in the 1700s, the Earl of Sandwich was so busy gambling(赌博） 2 . So, he asked his people to put some food between two pieces of bread, and then he ate it while gambling. The sandwich has been popular ever since.
Chocolate Chip Cookies
In 1930, Ruth Wakefield was making chocolate cookies at a small hotel in Massachusetts. 3 , Ruth broke a bar of chocolate into little pieces and added them to the dough (面团）.When the cookies were baked, the chocolate hadn’t melted(融化）. Instead, there were little chips of chocolate throughout the cookie. Ruth was soon selling chocolate chip cookies.
Potato Chips
One day in 1853, a man at a restaurant in New York ordered some French fries. He thought 4 . The cook, George Crum, decided to teach the man a lesson. He cut a potato into paper-thin pieces and fried them so heavily 5 . However, the customer loved them. Soon other customers were also asking for potato chips.
A. they were too thick to eat
B. were discovered by accident
C. that he did not want to go to eat
D. that they could not be cut with a fork
E. When she ran out to bake chocolate
1. 2. 3. 4. 5.
B
阅读短文，根据短文内容回答问题。
The first telephone card，produced in 1976，was Italian. Five years later, the first British card appeared, and now you can buy cards in more than 100 countries. People usually start collecting cards because they are small and light and you don’t need much space for them. It is also a cheap hobby for beginners, although it becomes a serious business for some people. In Paris, for example, there is a market where you can buy telephone cards which cost up to ?4,000. The first Japanese card has a value of about ?28, 000. Most people only see cards with prices in their collectors’ magazine.
1. When was the first Italian telephone card produced?

2. How many countries can produce telephone cards now?

3. Where can we find a market to buy telephone cards?

4. What is the price of the first Japanese telephone card?

5. In which magazine do most people see cards with prices?

三、书面表达。
根据中文大意和英文提示词语，写出意思连贯、符合逻辑、不少于50词的短文。所给英文提示词语仅供选用。请不要写出你的校名和姓名。
电脑大家都熟悉吧？那么请以“The most helpful invention－computer”为题写一篇文章，说说电脑的优点及其在人们日常生活和工作中的应用。
提示词语：make no mistakes，important，help，life，work，store，information，pass on，chat，shopping
The most helpful invention －computer



答案：
一、根据课文内容，用 because，because of, since, as, as well as 填空。
1. because of 2. Since 3. as well as 4. Since 5. Because, as well as 6. as
7. because 8. because 9. As
二、阅读理解
A
1. B 解析：下文介绍了三明治、巧克力饼干及薯片的发明，它们都是偶然被发明的。由此可推知，本句的意思是:一些我们最喜爱的食物是偶然间发明的。故选B。
2. C 解析：由下句“他边赌边吃”可推知，他忙于赌博以至于他不想出去吃东西。故选C。
3. E 解析：由本段标题可知，本句谈论内容与巧克力有关。在题目提供的选项中，只有E“当她跑出来烘烤巧克力时”最能衔接上下文。故选E。
4. A 解析：由下文“厨师为了教训这个顾客，将土豆切成很薄的薄片”可推知，这位顾客认为土豆片太厚了。故选A。
5. D 解析：由常识知，薯片如果切得太薄，炸得很脆是无法用叉子叉起来吃的。故选D。
B
In 1976.
解析：由文中第一句 The first telephone card, produced in 1976, was Italian.知答案为 In 1976。
More than 100.
解析：由文中第二句now you can buy cards in more than 100 countries.知答案为 More than 100。
In Paris.
解析：由文中第五句In Paris, for example, there is a market where you can buy telephone cards which cost up to ?4,000. 知答案为 In Paris.
?28,000.
解析：由文中第六句The first Japanese card has a value of about ?28,000.知答案为 ?28,000。
In the collectors’ magazine.
解析：由文中第七句Most people only see cards with prices in their collectors’ magazine.知答案为 In the collectors’ magazine。
三、书面表达。
The most helpful invention—computer
Computers can almost do everything and make no mistakes. They’re becoming more and more important because they have helped people a lot in life and work. For example, they are used to write, draw and play games; they are also used to help teach and study. They can store some information that we need; they can also help pass on messages on the Internet. We can chat online; we can also do some shopping on the Internet. I think the computer is really the most useful and helpful invention.