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1、Unit 7,Unit 7 Teenagers should be allowed to choose their own clothes.,Section A 3Grammar Focus-4c,Grammar Focus,根据课本内容，完成下列句子。,1.我认为不应该允许十六岁的孩子开车。I dont think sixteen-year-olds _ _ _ to drive.2.我同意。他们还不够严谨。I agree.They arent serious enough.,should be allowed,3.你认为应该鼓励青少年去自己做决定吗？Do you think teenage
2、rs _ _ _ to make their own decisions?4.不，我不认同这个。青少年还太小不能自己做决定。No,I dont agree with this.Teenagers are _ _ _ make their own decisions.,should be encouraged,too young to,5.不应该允许青少年去做兼职。Teenagers _ _ _ _ to have part-time jobs.6.不，我不同意。他们可以从工作当中学到很多。I disagree.They can _ a lot _ working.,learn from,sho
3、uld not be allowed,7.你认为如果不用闪光灯的话可以允许我们拍照吗？Do you think we _ _ _ to take photos if we dont use a flash.8.如果不用闪光灯的话，那么拍照是可以的。If you dont use a flash,then it may be OK.,may be allowed,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。在前面两个单元我们已经学习了一般现在时的被动语态和一般过去时的被动语态，它们的结构为：are/is+及物动词的过去分词
4、,were/was+及物动词的过去分词。,含有情态动词的被动语态,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。2.You can take this book home.（改为被 动语态）This book can be taken home(by you).3.This problem cant be worked out very easily.这道题轻易算不出来。4.Mus
5、t 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。,be 过去分词,宾语,not,情态动词,【运用】.选择最佳答案。()Young trees should _ every year.A.be plantedB.plantedC.plant,A,.按要求完成下列各句，每空一词（含 缩写）。1.We must do the work
6、 right now.（改为被 动语态）_ _ _ _ _ right now.2.Teenagers should be allowed to go out with their friends on school nights.（改为否定句）Teenagers _ _ _ to go out with their friends on school nights.,The work must be done,shouldnt be allowed,3.A book should be read each month.(改 为一般疑问句)_ _ _ _ _ each month?,Shoul
7、d a book be read,4a Rewrite the sentences according to the example.1.You must clean your bedroom every day.Your bedroom must be cleaned every day.2.Parents should encourage teenagers to do social work for their community.Teenagers _ _.3.Can Lucy do her homework tomorrow instead?Can _ _?,should be en
8、couraged(by their parents)to do social work for their community,the homework be done(by Lucy)tomorrow instead,n.社区，社团,4.Do you think we must keep teenagers away from the Internet?Do you think teenagers _?5.Parents should give teenagers chances to make their own decisions.Teenagers _ _,must be kept a
9、way from the Internet,should be given chances to make their own decisions.,keepaway from 避免接近，远离,n.机会，可能性,自己做决定,Should teenagers _(ask)to move out when they start working?In many Western countries,teenagers _(allow)to move out at eighteen.Their parents believe that they should _(educate)to take care
10、 of themselves from a young age.This way,when they _(start)working they can manage their own lives.,4b Fill in the blanks with the correct forms of the words in brackets.,be asked,are allowed,be educated,start,v.教育；教导,v.完成；应付,However,in most Asian societies,it is not common for teenagers to _(move)o
11、ut.Chinese parents believe that it is better for children to live with parents who can _(take)care of them.But the young should then look after their parents as they get older.That is why many Chinese adults _(continue)to live with their parents.,move,take,continue,n.社会,Homework,You and your friend are starting an English club.Make a list of rules about what should and should not be allowed.e.g.Members should be allowed to use dictionaries.They should only use English-English dictionaries.,
