1、单元语法小专题 Grammar Focus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)。eg: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 +not+be+及物动词的过去分词+(by+宾语)。eg:The book cant be taken out o
2、f the reading room.这本书不能拿出阅览室。 来源:学优高考网 gkstk(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.eg: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？eg:What should students be allowed to do?应该允许学生们
3、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，见下图主动语态： Teachers should allow students to play computer games.主语 动词原形 宾语被动语态：Students shoud be allowed to play computer games (by teachers.)同步语法强化训练来源:学优高考网.用括号内所给动词的适当形式填空。1.Many more trees should_ (plant) this year.2.Must the work _(finish) by 6:30 this aft
4、ernoon?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 food shouldnt be _(eat).7.The stars can _(not see) in the daytime.8.Can this kind of bike _ (buy) in that shop?9.The fruit should
5、 _(keep) well during winter.10.Should I _ (allow) to make my own decisions?.句型转换，每空一词。11.Nobody can answer the question.(改为同义句)The question _ _ answered by anybody.来源:学优高考网gkstk12.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
6、?(改为被动语态)_ the children _ _ good care of?来源:学优高考网14.The classroom must be cleaned after school.(对画线部分提问)_ _ the classroom_ _?来源:gkstk.Com15.We must wash our hands before meals.(改为被动语态)Our hands _ _ _ before meals.根据汉语意思完成英语句子，每空一词。16.更远的恒星有一天可能被参观。Farther planets_ _ _ one day.17.游客不应该在动物园里喂动物。Animal
7、s _ _ _ by tourists in the zoo.18.青少年不应该允许吸烟。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.同步语法强化训练.1.be planted 2.be finished 3.be found 4.be learned 5.not be put 6.eaten 7.not be see 8.be bought 9.be kept 10.be allowed.11.can be 12.be cleaned 13.Can;be taken 14.When must; be cleaned 15.must be washed.16.may be visited 17.shouldnt be fed 18.should not be allowed to smoke 19.are allowed to 20.shouldnt be allowed to
