Unit 7习题课件单元语法小专题.ppt

1、单元语法小专题(Grammar Focus),语法精讲 含有情态动词的被动语态 本单元的语法重点是:含有情态动词的被动语态。其结构为:情态动词(should，must，may，can，could等)be及物动词的过去分词。 1.含有情态动词的被动语态的常见句式: (1)肯定句结构为:主语情态动词be及物动词的过去分词(by宾语).如: Your homework should be finished by yourself.你应该自己完成作业。,(2)否定句结构为:主语情态动词notbe及物动词的过去分词(by宾语).如: The book cant be taken out of the r

2、eading room.这本书不能拿出阅览室。 (3)一般疑问句结构为:情态动词主语be及物动词的过去分词(by宾语)? 回答:Yes，主语情态动词./ No，主语情态动词not.,如: Should these young trees be watered every day？应该每天给这些小树浇水吗？ Yes，they should./ No，they shouldnt.对，应该。/不，不应该。 (4)特殊疑问句结构为:疑问词一般疑问句？如: What should students be allowed to do？应该允许学生们做什么？,2.含情态动词的主动语态变被动语态的变化步骤:(

3、以should为例，见下图),.用括号内所给单词的适当形式填空。 1.Many more trees should _ (plant) this year. 2.Must the work _ (finish) by 6:30 this afternoon? 3.Where can the lost boy _(find)? 4.Thanks to the Internet，different kinds of information can _ (learn) in a short time. 5.The water should _ (not put) here. 6.The bad fo

4、od shouldnt be _(eat).,be planted,语法精练,be finished,be found,be learned,not be put,eaten,7.The stars can _(not see) in the daytime. 8.Can this kind of bike _(buy) in that shop? 9.The fruit should _(keep) well during winter. 10.Should I _ (allow) to make my own decisions?,not be seen,be bought,be kept

5、,be allowed,.按要求完成下列句子，每空一词。 11.Nobody can answer the question.(改为同义句) The question _ _ answered by anybody. 12.We should clean our teeth twice a day.(改为被动语态) Our teeth should _ _ twice a day. 13.Can you take good care of the children？(改为被动语态) _ the children _ _ good care of? 14.The classroom must b

6、e cleaned after school.(对画线部分提问) _ _ the classroom _ _？ 15.We must wash our hands before meals.(改为被动语态) Our hands _ _ _ before meals.,cant be,be cleaned,Can,be taken,When must,Be cleaned,must be washed,.根据汉语意思完成句子，每空一词。 16.更远的恒星有一天可能被参观。 Farther planets _ _ _ one day. 17.你不应该在动物园里喂动物。 Animals _ _ _ by you in the zoo. 18.不应该允许青少年吸烟。 Teenagers _ _ _ _ _ _.,may be visited,shouldnt be fed,should not be allowed to smoke,19.我们被允许周六晚上去看电影。 We _ _ _ go to the m