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时间:2020-09-17
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1、英语时间状语从句状语从句1.时间状语从句(1)whenwhen用作并列连词(正在那时,突然)Wewereabouttostartwhenitbegantorain.IwaswatchingTVwhensomeoneknockedatthedoor.…onthepointofdoing…when…did………hadjustdonewhen……(2)asas与延续性动词连用,侧重两个动作伴随发生,其时态一致:Ashegrewolderhelostinterestineverythingexceptgardening.Wewerehavingbreakfastasshe___
2、_____(watch)TV.(3)whilewhile“在……期间”,与延续性动词连用,和主句的动作同时发生,常用三种时态。1.WhileIwaswaitingatthebusstop,buseswentbyintheoppositedirection.2.Whileinprison,hewrotehisfirstnovel.3.Shoesweremendedwhileyouwaited.(4)before①before“在……之前”Ihadfinishedmypapersbeforemyteacherwentabroad.②before“过…时间之后才…”,注意使用
3、___________和___________时态。Theyworkedlonghoursbeforeeverythingreturnedtonormal.恢复正常Itwillbealongtimebeforewefinishthisdictionary.③还没来得及ThebellrangoffbeforeIcouldanswerit.(5)assoon此资料由网络收集而来,如有侵权请告知上传者立即删除。资料共分享,我们负责传递知识。as“一…就….”,directly,immediately,instantly;theinstant(that),theminute(t
4、hat),thesecond(that),themoment(that)等通常都可与assoonas换用。IrecognizedherimmediatelyIsawher.(6)…hardly...when…/…nosooner...than…“刚……就…”,从句用过去时,主句用过去完成时。注意倒装。Hehadnosooner/Nosoonerhadhearrivedthanhewasaskedtoleaveagain.Wehadhardlybegun/Hardlyhadwebegunourtalkwhenitbegantorain.(7)since从句用一般过去时,主
5、句通常用现在完成(进行)时.We’venevermetsincewegraduatedfromthecollege.WhathaveyoubeendoingsinceImetyoulasttime?Ithasbeen/is3yearssincehecameback.练习:Itwasevening______hecameback.Itwasintheevening______hecameback.(8)till/until“直到……时(为止)”,till不放在句首,until多用于句首。动词的延续性问题Tomwillremainincollegeuntil(till)he
6、finisheshisPh.Dcourse.肯定句Iwon’tgowithyouuntil(till)Ifinishmyhomework.否定句NotuntilIfailedintheexamdidIrealizeIshouldstudyhard.倒装ItwasnotuntilIfailedintheexamthatIrealizedIshouldstudyhard.在强调句中的倒装问题(9)whenever/eachtime/everytime/anytime此资料由网络收集而来,如有侵权请告知上传者立即删除。资料共分享,我们负责传递知识。“每当;每次”,可以换用。W
7、henever/Everytime/EachtimeImether,shewasstudying.(10)bythetime与完成时连用Bythetime(that)thisletterreachesyou,Iwillhaveleftthecountry.Bythetimehewas10,hehadlearned10000words.Bythetimeyougetthisletter,IwillbeinCanada.(Longman)be动词可不用完成时注意:Bythetimeheretired,WiltheldmanyNBArecord
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