仁爱科普版九年级上册 Unit 2 Topic 2 All these problems are very serious. 教案

【教学标题】九年级上册Unit2 Topic2
【教学目标】
1.复习并进一步掌握Topic2课文重要知识点与考点
2.理解并掌握一般过去时与现在完成时的区别
3.能运用所学正确解题
【教学重点】
1. 时间状语从句：while 引导时间状语从句只能是延续性动词。
when引导的从句动词可以使延续性动词，也可以是短暂性动词
while sb.be doing, sb. be doing.
while然而
2．“阻止某人做某事”：stop sb./sth. (from) doing sth.
prevent sb./sth. (from) doing sth.
keep sb./sth. from doing sth. (from不能省略)
3.“the number of & a number of”: a number of “许多，大量”
a number of + 可数名词复数 + 谓语动词复数
the number of “数目”
the number of + 可数名词复数 + 谓语动词单数
【教学难点】
1. 不同的不定代词的区别用法：详见教学内容
2. 复合不定代词与复合不定副词考点：形容词放其后；做主语时谓语动词用单数
【教学内容】
考点1 While
原文重现：While I was walking down the street just now, I couldn’t see anything.
(1) while 引导时间状语从句只能是延续性动词。
when引导的从句动词可以使延续性动词，也可以是短暂性动词
while sb.be doing, sb. be doing.
while然而
考点2 stop
原文重现： Trees can stop the wind from blowing the earth away.
(1) stop sb./sth. (from) doing sth.
prevent sb./sth. (from) doing sth.
keep sb./sth. from doing sth. (from不能省略)
protect sb./sth. from doing sth. (from不能省略)
(2) earth着重指与天空相对的“土地”，还泛指泥土
soil 指用于种植庄稼的“土壤”
ground指大地表面
land指与河、湖、海洋相对的陆地
(3) blow sth. away 把…吹/刮走 blow-blew-blown
wash sth. away 把…冲走，把…洗掉
拓展：blow out吹灭
put out 扑灭
考点3 number
原文重现：People have cut down such a large number of trees that the land change into desert.
a number of “许多，大量”
a number of + 可数名词复数 + 谓语动词复数
the number of “数目”
the number of + 可数名词复数 + 谓语动词单数
eg: There are a number of cars in the parking lot. The number of the cars is about 200.
停车场停了大量的车。车的数量大约是200。
巩固：such+a(n)+形容词+单数名词+that从句。“如此……以致于……”
such+形容词+复数名词/不可数名词+that从句。
a lot of /lots of 和plenty of 都可修饰可数与不可数名词。“许多”
考点4 avoid
原文重现：How can we avoid a serious water shortage
avoid 避免 v. + sth. / doing sth.
后接动名词的动词？
avoid practice finish discourage enjoy imagine keep mind prevent regret spend consider(考虑)
【过手练习】
1. we were talking, the teacher came in.
A. When B. While C. Then D. If
2. There was a rainstorm yesterday. The flood the old bridge over the small river.
A. washed away B. went away C. blew away D. put away
3. We must do something to stop the river from too dirty.
A. to get B. got C. gets D. getting
4. I want to go to the dentists’, but you come with me.
A. needn’t to go B. don’t need go C. needn’t go D. needn't coming
5. --- Do you know the members in this club.
--- It’s about 200.
A. a number of B. the number of C. a lot of D. plenty of
6. --- What is ______ the people in the village
--- I am sorry. I don’t know. I only know that people like living in village.
A. the number of; the number of B. a number of; a number of
C. a number of; the number of D. the number of; a number of
7. The number of teachers in our school greatly increased last term. A number of teachers in this school from the countryside.
A. was; is B. was; are C. were; are D. were; is
8. He read the book and found advice on English study in it.
A. many B. lot of C. much D. plenty
9. That is problem none of us can work it out.
　 A. a such difficult , as B. so difficult a ,that C. such a difficult, that D. a so difficult ,as
10. He tried to avoid _______ my question.
A. to answer B. answer C. answering D. answers
语法 不定代词&副词
考点1 不定代词
1. 定义：不指明替代任何特定名词或形容词的代词叫作不定代词。大多数不定代词在句中可以作主语、表语、宾语、同位语和定语。
2. 各类不定代词：
可 数 不可数
许多 many much
a lot of, lots of, plenty of
一些 some, any
a few a little
几乎没有 few little
每个 任何一个 全都 都不 另一个
指两个 each either both neither (the) other
两者以上 each/every any all none/no another
some, any, no和every都可以和one, body, thing连用，构成复合不定代词。
some- any- no- every-
人 someone anyone no one/none everyone
somebody anybody nobody everybody
物 something anything nothing everything
1）复合不定代词作主语时，谓语动词用单数形式。
e.g. Something is wrong with the computer.
2）形容词或else修饰不定代词时应该放在不定代词之后。
e.g. There is something delicious on the table.
3）some-/any-复合不定代词的用法与some/any用法基本一致。肯定句以及期待对方肯定回答的疑问句中通用some-；否定句和疑问句句通用any-。
e.g. Would you like something to eat
I don't know anything about it.
I heard somebody singing in the classroom.
4）Each of
Neither of
Either of
None of
5）we each后加谓语动词复数形式
图示区别
... ... one .... the other
... ... one .... another ....
... ... one .... the others ...
... ... some .... others ....
... ... some .... the others ....
考点2 不定副词
some, any, no和every还可以与where连用，构成表示地点的副词，即
somewhere 某处，在某处
anywhere 在任何地方，无论何处
nowhere 无处，不知名的
everywhere 到处，处处 = here and there
注意：else放在不定副词后面。
【过手练习】
一、用复合不定代词或不定副词填空：
1. I can't hear anything = I can hear .
2. There is on the floor. Please pick it up.
3. Did go to play basketball with you
4. I phoned you last night, but answered it.
5. Why don't you ask to help you
6. Could I get to drink
7. There's in the box. It's empty.
8. Maybe put my pencil away. I can't find it .
9. --- Do you have special to tell me today
--- No, special.
10. --- Who is in still in your classroom
--- (没有人).
二、选词填空
another, other, others, the other, the others
1. We always help one .
We always help each
2. Of these three girls one comes from China and two come from Japan.
3. This sweater is a little too big for me. Can I try on
4. Some like black tea, prefer green tea.
5. I don’t like these colors. Show me some , please.
6. Have you any books on this subject
7. I will give the other students five minutes for them to finish their exercise.
8. It is always hard to tell the twins one from .
三、单项选择
1. --- Do you want an apple or a pear
--- . I really don’t mind.
A. Both B. None C. Either D. Neither
2. --- Could you please buy _______ drinks and snacks
--- Sorry. I don't have _______ money.
A. some, any B. any, any C. some, some D. any, some
3. of them knows French, so I have to ask a third person for help.
A. Neither B. Either C. Both D. None
4. Shirley had to buy these CDs because she didn’t know which one to take.
A. all B. none C. each D. both
5. --- Is OK, Lucy
--- No, my math is not as good as English.
A. everything B. something C. nothing D. anything
6. --- What else do you want --- else. I think I have got everything ready.
A. Something B. Nothing C. Anything D. Everything
7. --- Could you lend me your pen --- Of course. I have two, and of them write well.
A. any B. all C. both D. two
8. of the three businessmen knew about the document because it was kept a secret.
A. None B. Neither C. Any D. Each
9. She was tired because she did housework today.
A. too much; too many B. much too; too much
C. too much; too much D. too many; too much
10. My teacher knows about English, because he has experience.
A. lot of, a lot of B. lots of, a lot C. a lots of, lot of D. a lot, a lot of
11. Kathy can write Chinese but she can read Chinese words．
A. little; few B. a few; a little C. little; a few D. few; a little
12. of them has a dictionary and one of them can look up words in the dictionary
A. Each, every B. Every ,each C. Each, each D. Every, every
13. he I are interested in flying kites.
A. Both; and B. Neither; nor C. Either; or D. Not only; but also
14. --- Can I have some more ice cream, Mum
--- Sorry. There is left in the fridge.
A. none B. nothing C. no one D. anything
15. --- Can you see _____ in the picture
--- Yes. I can also see two trees.
A. else B. else something C. anything else D. else anything
16. Boys and girls, I have ________ to tell you.
A. important something B. something important
C. anything important D. important anything
17. --- Oh, the apples are delicious. I want two _________ apples, how about you, Gina
--- I'd like _________ three.
A. another; more B. more; another C. other; more D. more, other
【课后练习】（建议用时：20分钟；总分10分）
一、阅读理解。（每题2分，共10分）翻译成中文
There are some easy things you can do to protect the environment and the earth. Choose ideas from the list or come up with a few of your own.
·Plant flowers, grass or trees.
·Whenever you visit a park or beach, take away what you bring there—keep rubbish in a bag until you can put it in a dustbin.
·Turn off the lights and TV sets when you leave the room. This can save a lot of electricity.
·Turn off the tap when you brush your teeth. You can save some water by not letting it run. Also, use a glass cup instead of a paper cup because this saves paper.
·Keep the doors and windows closed in winter to keep warm air in.
·Give your old books and magazines to a library instead of throwing them away.
·Give your old clothes to poor children you know instead of throwing them away.
·Use both sides of paper.
·Stop pouring dirty water into the rivers or lakes nearby.
·Encourage all your friends to do the same things you do to help protect the earth.
You don’t have to wait until Earth Day to do these things. Make every day Earth Day. If everyone makes a contribution to protecting the environment, the world will become much more beautiful.
根据短文内容，选择正确答案。
( )1.From the above, we know that this is _____.
A.a sign B.a proposal (倡议书) C.an advertisement D.a notice
( )2.The writer tells us _____.
A.to throw rubbish into a dustbin
B.to pour dirty water into the rivers
C.to save water by not letting it run while brushing our teeth
D.that we can’t do all these things until Earth Day
( )3.We can _____ to save paper.
A.use a paper cup B.use both sides of paper
C.give old books to a library D.pick up waste paper at a school
( )4.Which of the following is NOT true according to the writer
A.Turn off the lights when you leave the room.
B.Close the doors and windows in winter.
C.Use a paper cup when you brush your teeth.
D.Give your old clothes to the poor children.
( )5.What’s the best title of the passage
A.Protect the Earth B.Save Water and Electricity
C.Make Better Use of Old Things D.Save Money
动词单数
+
名词复数
1