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)否认句结构为: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 reading r
2、oom.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)答复: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:(以should为例,见以以下图)语
3、法精练.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 afternoon3.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 food shouldnt be _(eat).7.
4、The stars can _(not see) in the daytime.8.Can this kind of bike _(buy) in that shop9.The fruit should _(keep) well during winter.10.Should I _(allow) to make my own decisions.按要求完成以下句子,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 twi
5、ce 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 of14.The classroom must be cleaned after school.(对画线局部提问)_ _ the classroom _ _?15.We must wash our hands before meals.(改为被动语态)Our hands _ _ _ before meals.根据汉语意思完成句子,每空一词
6、。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 _ _ _ _ _ _.19.我们被允许周六晚上去看电影。We _ _ _ go to the movies on Saturday evening.20.不应该让他那么做。He _ _ _ _ do like that.单元语法小专题(Grammar Focus).1.be planted2.be finished3.be found4.be learned5.not be put6eaten7.not be seen8.be bought9.be kept10.be allowed.11.cant be12.be cleaned;be taken14.When must;be cleaned15must be washed.16.may be visited17.shouldnt be fed18.should not be allowed to smoke19.are allowed to20.shouldnt be allowed to