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来源:学优高考网 gkstk1含有情态动词的被动语态的构成含有情态动词的被动语态由“情态动词be及物动词的过去分词”构成。常见的情态动词有can， may，must，should 等。如：These magazines can be taken home by you.这些杂志你可以带回家。I think a bridge should be built over the river.我认为这条河上应该建座桥。Everything must be finished before 5：00 pm.下午五点以前所有的事必须完
2、成。2含有情态动词的被动语态的句式变换(1)否定句：主语情态动词notbe及物动词的过去分词(其他)。如：The flowers mustnt be watered at noon.中午时一定不要给花浇水。This problem cant be worked out very easily.这道题轻易算不出来。(2)一般疑问句：情态动词主语be及物动词的过去分词(其他)。如：Should the work be finished tomorrow morning? 这项工作应该在明天上午完成吗？Yes， it should./No，it shouldnt.是的，应该。/ 不，不应该。(3)特
3、殊疑问句：疑问词情态动词主语be及物动词的过去分词(其他 )？如：When can the work be finished? 这项工作能在什么时候完成？Where should these things be put? 这些东西应该放在哪里？(4)反意疑问句：附加部分要用“情态动词主语” 。如：This book shouldnt be taken out of the library， should it? 这本书不应该被带出图书馆，是吗？语法精练. 用括号内所给单词的适当形式填空。1Many more trees should be_planted(plant) this year.2M
4、ust the work be_finished(finish) by 6：30 this afternoon?3Where can the lost boy be _found(find)?4Thanks to the Internet，different kinds of information can be_learned(learn) in a short time.5The water should not_be_put(not put) here.6The bad food shouldnt be eaten(eat)7The stars can not_be_seen(not s
5、ee) in the daytime.8Can this kind of bike be_bought(buy) in that shop?9The fruit should be_kept(keep) well during winter.10Should I be_allowed(allow) to make my own decisions?. 按要求完成下列句子，每空一词。11Todays work must be done today.(改为一般疑问句)Must todays work be done today?12Teenagers should be allowed to dr
6、ive.(改为否定句) Teenagers shouldnt be allowed to drive.13Some food might be brought by her this_afternoon(对画线部分提问)When might any food be brought by her?14You should sweep the floor first.(改为被动语态)The floor should be swept by you first.15Jeans mustnt be worn in PE.class by them.(改为主动语态) 来源: 学优高考网They must
7、nt wear jeans in PE.class. 来源:学优高考网 gkstk. 根据汉语意思完成句子，每空一词。来源:学优高考网16放学后你的书包必须带回家去。Your schoolbag must be brought home after school.17你的自行车不应该放在图书馆的前面。Your bike shouldnt be put in front of the library.18这项工作可以在两天后完成吗？来源:gkstk.ComCan this work be finished in two days?19我认为不能现在打扫教室。I dont think the classroom can be cleaned now.20这些花必须每天浇一次吗？Must these flowers be watered once a day?
