欢迎来到英语课堂Module1GrammarSmalltalkReadthesentencefromthelisteningpassageandanswerthequestions.Youneedn’thavespokensoslowly.1.Whosaidthis,thetouristortheEnglishperson?Thetourist.Activity12.Whydidshesayit?A.Theotherpersonwasspeakingtooquickly.B.Theotherpersonwasspeakingtooslowly.C.Theotherpersonwasspeakingslowlyanditwasn’tnecessary.C“didn’tneedtodo”和”needn’thavedone”的异同didn'tneedtodo表示：过去不必做某事,事实上也没做。Needn’thavedone表示：过去不必做某事,但事实上做了。JohnwenttothestationwiththecartomeetMary,soshedidn'tneedtowalkbackhome.约翰开车去车站接玛丽，所以她不必步行回家了。needn‘thavedone表示：过去不必做某事,但事实上做了。DiscussionTherewasplentyoftime.She___.A.mustn’thavehurriedB.couldn’thavehurriedC.mustnothurryD.needn’thavehurried选择D。needn'thavedone.意为"本不必"，即已经做了某事，而时实际上不必要。mustn'thavedone用法不正确，对过去发生的事情进行否定性推断应为couldn'thavedone,"不可能已经"。mustnotdo不可以（用于一般现在时）。GroupworkRewritethesesentencesusingneedn’thavedone.1.Itwasn’tnecessaryforyoutobringsomeflowers!Youneedn’thavebroughtsomeflowers.Activity22.Thankyoufortidyingtheroom—butitwasn’tnecessary.Youneedn’thavetidiedtheroom.3.Therewasnoneedforyoutobuytheboxofchocolates.Youneedn’thaveboughttheboxofchocolates.4.Whydidyougotoschool?It’sSunday!Youneedn’thavegonetoschool.It’sSunday!5.Thankyouforbringingthebooktoshowme,butIalreadyhaveit.Youneedn’thavebroughtthebooktoshowme.Ialreadyhaveit.Completethesentencesusingdidn’tneedtoorneedn’thavedone.Example:ItwasaninformalpartysoIdidn’tneedtowear(wear)asuit.Activity41.Webroughtsomefoodtothepartybuttherewastoomuch,sowe____________________(bring)any.2.MyfriendspokegoodMandarinsoI_____________________(translate)thespeechforhim.didn’tneedtotranslateneedn’thavebrought3.Theofficehadalreadyopenedwhenwearrivedsowe____________________(wait)outsideinthestreet.4.Igottothepartyat6p.m.buttherewasnoonethere,soI________________(arrive)soearly.5.Itoldthehostallaboutmyhometownandthenhetoldmehe’dbeenthere.I____________________(tell)himanything!didn’tneedtowaitneedn’thavearrivedneedn’thavetold
