重庆市梁平实验中学高中英语-Unit1-Grammar课件2-重庆大学版必修3

《重庆市梁平实验中学高中英语-Unit1-Grammar课件2-重庆大学版必修3》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、Whyistheroadsowet?Itmusthaverainedlastnight.musthavedone对过去的非常肯定的推测（语气最强）对已发生的过去情况的推测，若陈述句谓语部分有“musthavedone”，而且有表示过去的时间状语,问句部分用didn't；1)Theymusthavegonetherelastnight,didn'tthey?2)Theymusthavearrivedbynow,haven’tthey?对已发生的过去情况的推测，若陈述句谓语部分有“musthavedone”，若没有表示过去的时间

2、状语，问句部分用haven’t或hasn’t.3)HemusthavebeentotheGreatWall,hasn'the?对已发生的过去情况的推测，若陈述句谓语部分有“musthavedone”，若没有表示过去的时间状语，问句部分用haven’t或hasn’t.这个房间昨天肯定被清扫了。Theroom_____________________yesterday.musthavebeencleaned他一定已经背了5000单词了。He_____________5,000words.musthavelearntYoumusth

3、aveseenthefilm“JourneytotheWest”,___________?haven’tyouTheymusthavebeentotheWorldExpolastweek,_________?didn’ttheyA:Wherearethegirls?Couldtheyhavegonehome?B:No,theycan’thavegonehome.It’ssoearly.canhavedone对过去的疑问推测can’thavedone对过去的否定推测疑问句和否定句--WhereisJohn?Canhehavego

4、netotheplayground?--No,hecan’thavegonetotheplaygroundItisraining.--____MrKing_____________theletter?金先生已经收到那封信了吗？--No,he__________________it.不，他不可能收到。Canhavereceivedcan’thavereceived--Look,thelightsareoffintheirroom.--Wherehavetheygone?--Theymighthavegonetothecinema

5、.may/mighthavedone某事有可能发生过(表示对过去的不太肯定的推测，语气比musthavedone弱)用于肯定句和否定句(may的语气比might稍强)---WheredidAdamgetthatnewfootball?Hehasn’tgotanymoney.---It____apresent.Afterall,itwashisbirthdaylastweek.A.mighthavebeenB.mightbeHe______outbecausethelightwason.A.maynothavegoneB.ma

6、yhavenotgoneC.maynotgoD.mustnothavegoneA:Hereisadollforyourdaughter.B:Thankyousomuch.It’sbeautiful.Butyouneedn’thaveboughtit.Youhaveboughtsomanyforher.needn’thavedone本没有必要做某事（但此事已做）We___________________theplantbecauseitrainedlastnight.(本无必要)needn’thavewateredOh,I'mn

7、ot feeling well in the stomach.Ishouldn’thaveeatensomuchfriedchickenjustnow.shouldn’thavedone本不该做某事（但此事已做）表示责备Heshouldhaverepairedthebikeyesterday.shouldhavedone本应该做某事（但此事未做）表示责备你本应该先完成你的作业。You________________yourhomeworkfirst.shouldhavefinished你本不应该跟我撒谎。You________

8、________tome.shouldn’thaveliedcould+havedone“本能够，本可以做某事”但却没做他本能够按时完成这项任务的。He_________________thetaskontime,buthedidn’tdoit.couldhavefinish