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1、Unit 3 Teenagers should be allowed to choose their own clothes Section A1. -Your city looks beautiful! Yes. Lots of trees and flowers _last year. A. are planted B. have planted C. were planted D. were planting2. The computers must _ before you leave. A. turn on B. turn off C . be turned on D. be tur
2、ned off3. About 500 cars _ in the factory next month. A. were made B. will make C. has been made D. will be made 用法：当我们不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者，或者只强调动作的承受者时，要用被动语态。 主动语态变为被动语态的方法是：（1）把原句中的宾语变为主语；（2）动词改为被动形式，即be+过去分词（3）原来的主语，如果需要的话，放在by 后面，如果没必要，可省略。 填空（被动语态填空）： 1. They often clean their classroo
3、m after school . Their classroom _ _ often _ _ by them after school. 2. Li Lei gave Tom a new pen last week . A new pen _ _ _ _ _ Tom last week . 3. A lot of people in China can speak English now . English _ _ _ _ _ by a lot of people in China now. 4. I have learned English for about two years. Engl
4、ish _ _ _ _ _ _ for about two years. 5. They will publish these story-books next month. These story-books _ _ _ _ _ _ next month.疑难解析：1. 1. instead of +n./doing (句中)； 代替；而不是；instead adv. 代替 后面不能跟其它的词，常放句末对比：instead /instead of 例： They talk _ doing homework. Why not ask the police _? 2. sixteen-year-
5、olds 十六岁的青少年 n.对比：sixteen-year-olds/ sixteen-year-old/ sixteen years old例： Tom is a _ _ boy. The boy is _ _. _ shouldnt work on weekends.3. 对比 allow sb. (not)to do sth.允许某人（不要）干某事 allow doing sth 允许做某事（ sb.） be allowed to do sth.（某人）被允许干某事 should (not)be allowed to do sth. ( 不 ) 应该被允许干某事 例： Cars _ t
6、o go too fast on the road . Yes, safety is the first.A. are allowed B. are allow C. arent allow D. arent allowed I think students should be allowed _ their own clothes.A. wearing B. to wear C. wear D. be worn Our teacher doesnt allow _ in class. A. talk B. talking C. talks D. to talk They dont allow
7、 the students _ in the river. A. going swimming B. to go swimming C. go swimming D. goes swimming4.- We have a lot of rules at my house. -So do we. So do we 为倒装句, 其结构是So + be 动词/助动词/情态动词主语, 在时态上应和上一句保持一致。应翻译为“我们也是这样”, 用英文解释是：We have a lot of rules at my house, too. 例如：1. They can play the guitar. _
8、_ _. (我们也是) 2. Tom went to the zoo last year, _ _ _ (我也是) 3. I read English every day , _ _ _ (Amy 也是) 4. We are soldiers， _ _ _ (他们也是) 5. He will play soccer this Sunday. _ _ _ (我们也是) 6. I like fruit, _ _ _.(他们也是)思考：1. They cant play the guitar, _ _ _. (我们也是)一词组：1.允许某人干某事 应该被允许做某事 2.扎耳朵眼 3.在那个年龄 4.不够认真 二1. 我认为16岁的青少年不应该被允许开车。 2. 他们谈话而不是做作业。 适当形式填空： u The telephone _ _(invent) by Bell in 1876.u The trees may _ _(plant) in spring.u Teenagers should not _(allow) to drive.u English _ _(speak) in Canada.u Math must _ _ (study) well.u We _ _(need) to learn English.2
