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1、Unit4Agoodread课题8下Unit4Agoodread--Grammar学习目标1.学会正确使用“特殊疑问词+动词不定式”的结构2.学会正确使用must和haveto学习内容四会内容词汇:handreviewreturn词组:handinwriteaboutandsoonaskforhelpwithwritingontime导学过程感悟一、预习在英语中,有一些动词或动词短语后面可以接“疑问词+动词不定式”结构,疑问词包括疑问代词what,which,who和疑问副词how,when,where等。如:Hedoesnotknowhowtoopenthesafe(保险箱)
2、.Ifindoutwheretobuyfruitcheaply.Shehasdecidedwhichtopictochoose.提醒:1.可用于这种结构的动词及动词短语有:know,learn,see,hear,ask,tell,advise,decide,explain,forget,remember,think,understand,wonder,discover,consider,guess,findout等。2.此结构可以改写成由该疑问词引导的宾语从句。Idonotknowwhattodo.=IdonotknowwhatIshoulddo.3.有些动词,如ask,sho
3、w,tell,advise,inform,teach等,其后可以接双宾语。Pleaseshowushowtodothat.Pleasetellmehowtogetthere.4.有些疑问词,如what,which,whose,howmany,howmuch等,其后可以先接一个名词,再接动词不定式。Shewonderedhowmanysubjecttochoose.5.此结构在句子中还可以作主语和宾语。Howtodealwiththeproblemismostimportanttous.Theproblemiswhentoleavetheplace.6.Why不可以用于此结构。m
4、ust和haveto的用法Must1.侧重主观的义务和必要,主要用于肯定句和疑问句,意思是“必须,得,要”,没有人称、时态、数的变化。Imustfinishmyhomeworktoday.2.must的否定形式mustnot表示禁止,意为“不能,不许”Youmustnotsmokehere.3.must还可以表示推测,意为“一定,必定”Youmustbeverytired.4.在回答带有must的问句时,否定式常用neednot或don’thaveto,而不用mustnot.--MustIdomyhomeworknow?--Yes,youmust./No,youneedn’t.
5、/No,youdon’thaveto.Haveto1.侧重一种客观的需要,意为“不得不”。Haveto有人称和数的变化。Mumisout,soIhavetolookaftermyyoungerbrother.It’sgettingdark.Hehastogohomenow.2.否定形式是donothaveto.展示交流Return1.及物动词,意为“归还”,相当于giveback。Theyhavereturnedthebiketome.=Theyhavegiventhebikebacktome.(不与back连用)2.不及物动词,意为“返回”,相当于goback/getback
6、/comeback.AnnwillvisityouwhenshereturnstoLondon.三、反馈练习:I.根据句意及所给的汉语提示完成句子。1.Theexamisover.Thestudentsare________(上交)intheirpapers.2.Afterreadingthebook,youcanwrite________(评论)inyournotebooks.3.Rememberto________(归还)thebookstothelibraryontime.4.--Whereistheparrotnow?--Ah...It’sonmy________(肩膀
7、).5.--Wherecanweborrowbooks?--Mymother________(建议)ustoborrowfromtheschoollibrary.II.用所给单词的适当形式填空1.Manypeople______never______(see)mostofthepopstars.Sotherewillbemanypeopleattheconcert.2.Idon’tknowwhatmadehimlaughso______(excite).3.John______(write)