牛津深圳版八年级英语下册《Unit 4 Cartoons and comic strips》课件:Grammar.ppt
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1、,Unit 4 Grammar,一般现在时的被动语态: amisare done一般过去时的被动语态: waswere done一般将来时的被动语态: willshallbedone现在完成时的被动语态:,Basketball is played by people all over the world.,A party was held (by them) last Sunday.,You will be fined if you go wrong,Revision,have / has + been + done,The bridge has been built for two year
2、s.,the passive voice with modal verbs,must throw,should cook,Rubbish _ into the bin.,Food _ before eating.,must,be thrown,should be cooked,The classroom should be cleaned,The exit may be stuck,may stick (粘贴),_on the side door.,_ every day.,should clean,RULE 1,We use _ + past participle to form the p
3、assive voice with modal verbs(情态动词).,modal verbs + be,Passive voice with modal verbs (can, may, must and should),e.g. The work can be finished in an hour.,含有情态动词的被动语态结构为:,肯定式: 主语+ can / may / must +be动过分否定式:主语+ can / may / must + not be + 动过分一般疑问句结构: Can / May / Must + 主语+ be +动过分?,the passive voice
4、 in the present perfect tense,树木已经被砍伐了(cut down)_河水已经被污染了(pollute)_,Trees have been cut down.,Water in the river has been polluted.,米饭已经做好了._画已经画好了._,Rice has been cooked already.,The picture has been drawn already.,现在完成时被动语态肯定句主语+has/ have been +V.P.P.+.(V.P.P.=动词的过去分词形式)Her motorbike has been stol
5、en.她的摩托车被盗了。现在完成时被动语态否定句主语+has/ have +not+ been+ V. P.P. +.The task has not been finished yet.任务尚未完成。,RULE 2,RULE 2,现在完成时被动语态一般疑问句句型1 Has he (she, it,单数名词)+been+ V.P.P.+.?句型2 Have we ( you , they,复数名词) + been + V.P.P. +.?Has a new computer been bought?Have they been sent abroad to study English?,RUL
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