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U7单元语法知识点和作文汇总
含有情态动词的被动语态
◆ 温故
◆ 在英语中，动词有两种语态，即主动语态和被动语态。
主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。
在八年级同学们已初步学习了被动语态，它的结构为：助动词be +及物动词的过去分词。
◆ 知新
◆ 本单元我们主要了解含有情态动词的被动语态。它的结构是什么呢？
观察下面例句中含情态动词被动语态的各种形式，然后补全结论中所缺的内容。
【例句】 1. Many trees should be planted in the mountains. 应该在山上种许多树。
You can take this book home. （改为被动语态） →This book can be taken home (by you).
3. This problem can’t be worked out very easily. 这道题轻易算不出来。
4. Must the work be done at once 这项工作必须立即完成吗？
【结论】
A. 含有情态动词的被动语态的结构为：情态动词+_____+及物动词的______。
B. 含有情态动词的主动语态变为被动语态时，要把主动语态的_____变成被动语态的主语。 C. 变为否定句时只需要在情态动词后加________。
D. 变为一般疑问句时只需把________提到句首。
一. 选择填空
1. The rivers smells terrible People must dirty things into it .
A. be stopped to throw B. be stopped from throwing
C. stop to throw D. stop form throwing
2. Paper first invented in China .
A. is B. are C. was D. were
3. — Do you like the flower — Yes , it sweet .
A. is smelling B. smelt C. is smelt D. smells
4. It snowed heavily last night . The ground thick snow .
A. was covered with B. was filled with
C. was made of D. covered with
5. The light in the room before you leave .
A. must turn of B. will turn off C. are turned D. must be turned off
6. the kind of question often in your class , Ann
A. Does , ask B. Is , asked C. Has , asked D. Will , ask
7. The bridge in three weeks .
A. will build B. is built C. will be built D. builds
8. The old men and the children must in our country .
A. take good care B. be taken good care
C. take good care of D. be taken good care of
9. Paul doesn’t have to be made He always works hard .
A. learn B. to learn C. learned D. learning
10. The girl was unhappy because she by some boys in the class .
A. is laughed B. was laughed C. laughed at D. was laughed at
11. We that the English test next Monday .
A. are told , gives B. tell , will give
C. are told , will be given D. told , is going to be given
12. Great changes place in China since 1978 .
A. have been taken B. have taken C. has been taken D. took
13. the red pencil-box by your father last week
A. Has , bought B. Was , bought C. Does , buy D. Did , buy
14. Mary many songs at the party .
A. heard sing B. heard to sing C. was heard sing D. was heard to sing
15. trees usually in April
A. Have , planted B. Are , planted C. Do , plant D. Were , planted
She is a sixteen-year-old girl.=She is sixteen years old.
2. allow sb. to do sth. 允许某人做某事（主动语态）
　be allowed to do sth. 被允许做某事（被动语态）
　Mother allows me to watch TV every night.
　LiLy is allowed to go to America.
3. get their ears pierced 穿耳洞
　让/使（别人）做某事　 get sth. done(过去分词)
　　　　　　　　　　　 have sth. done
　I get my hair cut. == I have my hair cut.
4. enough 足够　
　形容词＋enough 如：beautiful enough　足够漂亮
enough＋名词　如：enough food 足够食物
enough…to 　足够…去做…
例：I have enough money to go to Beijing. 我有足够的钱去北京。
She is old enough to go to school.她够大去读书了。
5. stop doing sth. 停止做某事　Please stop speaking.
stop to do sth. 停止下来去做某事　Please stop to speak.
6. 系动词用法：系动词+adj
常用的系动词有：look, feel, be, become, get, turn, smell, taste, stay(保持), kept等。连系动词除be和become等少数词可接名词作表语外，一般都是接形容词。
　例：They are very happy. He became a doctor two years ago.
She felt very tired. The grass turns green.
get in the way of 碍事，妨碍
如： Her social life got in the way of her studies.
8. also 用于句中 I also like apples.
either用于否定句句末 I don’t like apples, either.
too 用于肯定句句末 I like apples, too.
常考情态动词
1)表 "推测"
must 一定（语气强；把握大）
may >might 可能
may not > might not 可能不
can’t 不可能（语气强；把握大）（注：mustn’t只有禁止的意思，不能表推测）
其中最常考的是must 和can’t， may也有出现，一般会有I am not sure提示。
表“必要性”
must 必须
needn't 不必 ( = don't have to)
3) 情态动词一般疑问句的问答
must 问：肯定：must 否定： needn’t / don’t have to
need 问：肯定：must 否定： needn’t / don’t have to
may 问：肯定：may / can 否定：can’t / mustn’t
could（委婉语气） 问：肯定：may / can 否定：can’t / mustn’t
1.—Must I come up with the solution to the science project today
—No, you ____. But you must make it ___ 5 o’clock tomorrow afternoon.
A.mustn’t ; at B.can’t ;before C.don’t have to;by D.needn’t ;in
2.Fresh food is good for you . But you have to _______it first because sometimes it a little dirty.
A. taste B. smell C. wash D. plant
3. There was something wrong with the line. We couldn’t _____each other clearly.
A. listen B. sound C. hear D. speak
4.Nathan likes his job because he ______enjoy the beauty of nature.
A.can B.must C.should D.is supposed to
They walked home last night because they couldn’t _____ to take a taxi.
A. leave B. buy C. afford D. allow
6.In America, you can open your presents immediately. You don’t have to _____!
A.pay B.wait C.check D.prepare
7.Are the glasses Tim’s
No, they ____ be his. He doesn’t wear glasses.
A.must B.can C.mustn’t D.can’t
8.Can you come to my party on Wednesday
Sorry, I ____ . I have a piano lesson.
A.can’t B.couldn’t C. Mustn’t
9.Excuse me,is this the way to No.10Middle School
Oh, sorry. I’m not sure. But it ___ be.
must B.should C.need D.may
10.You look pretty green, Kate.
Thank you. I like green. Green ___ give me energy.
can B.must C.should D.has to
U7单元作文范文
【典型案例】
目前，随着人们生活水平的提高，越来越多的家庭有了汽车，于是很多中学生学开车，尽管法律和父母都不允许，可他们依然我行我素，极个别学生开车进校园，学校要求穿校服，但一些学生仍然不穿，结合这些，以“Rules”为题，谈谈你的观点。
内容包括：1.喜欢开车的理由：很酷，向同伴炫耀(show off)；
2．穿校服的理由：学校要求；
3．不允许开车的理由：危险，没有驾照；
4．不想穿校服的理由：不时尚。
【思路点拨】
1．体裁：议论文。
2．时态：一般现在时。
3．人称：第一人称和第三人称。
4．写作思路：分层次写作，首先写家庭富裕，轿车多了，学生学开车及危害；接着写家庭富裕了，学生不愿意穿校服了；最后谈论自己的观点。
5．注意事项：分层写作，运用单元时态。
【范文展示】
Rules
Now more and more families have cars.Children，especially middle school students，want to drive a car themselves.They think it's cool.And they want to show off.What's more，a small number of students drive cars to school.Why are they not allowed to drive alone at school？Because they don't have licenses.Driving is dangerous.
We have to wear school uniforms at school every day.But some students don't like wearing them.They think the uniforms aren't fashionable.
In my opinion，the students shouldn't be allowed to drive at school.Because they are young.But I think we should be allowed to choose our own clothes.
热点作文演练】
你的父母平时对你在生活上、学习上有什么规定？请你以“My Family Rules”为题，写一篇120词左右的英语短文介绍你的家规并表达你的看法。家规至少3条。
提示：
1．你赞同的家规及理由；
2．你不赞同的家规及理由。
My Family Rules　
There are many rules in my family.
I like some rules because they are helpful.For example，I have to clean my bedroom every day.I think it's a good rule.On the one hand，children should be educated to take care of themselves from a young age.On the other hand，it is comfortable and relaxing for us to sleep in a clean bedroom.Besides，helping mother do chores makes her happy.
However，there are some terrible rules which make me unhappy.One of them is that I can't have my own hobbies.In my opinion，I think parents should support their children's dreams.That's because dreams can make children work hard and full of energy.What's more，I am not allowed to watch TV before finishing my homework on weekdays.I know we students feel tired after a day's study.I think parents should allow us to watch TV for a while when we get home.This can help us relax ourselves and it is also easier for us to pay attention to our homework.
All in all，my parents make these rules to help me be better，but some of my family rules are too strict.I think they should be changed!

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