资源描述:
《英语人教版九年级全册动词不定式中考常考用法复习.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、中考复习系列动词不定式用法归纳动词不定式的主要用法一、动词不定式没有人称和数的变化。二、动词不定式构成:带to:“to+动词原形”有时不带:helpdosth/helptodosth。否定形式:“not+动词不定式”三、常考用法(1).在一些常用结构中Itis+adj.(形容词)+todosth.Itis+n.(名词)+todosth.句型中it仅作形式主语,真正的主语为todosth。Ifounditverydifficulttogetajob.it是形式宾语,真正的宾语是后面的动词不定式。It’s++(for+sb.)+todosth.It’s+
2、difficult,hard,easy,possible,impossibleimportant,`+(of+sb.)+todosth.clever,wise,kind,good,right,nicewrong,bad,cruelsilly,stupid,foolishcareful,careless例.e.gItishard___youtodoitwell.=Foryoutodoitwellishard.Itiskind___youtohelpme.=Youarekindtohelpme.forofIt’sclever__himtosayso.It
3、isimpossible__youtofinishit.Itwaswrong__youtotellalie.Itwascareless___youtomakesomanymistakesintheexam.Itissilly__hertodosuchathing.Itisimportant___youtolearnEnglishwell.offorofofoffore.g(2)感观类等意义的动词(see,watch,hear,feel,make,let,have,observe,notice,help等)后不带to的不定式作宾补。如:Thebossm
4、akesthemwork16hoursaday.Iheardhersinginthenextroom.提示板:若变成被动语态,在上述结构中,不定式符号to要加上。如:Theyaremadetowork16hoursadaybytheboss.Shewasheardtosinginthenextroom.(3)表目的:例:HegotupearlytocatchthefirstTopasstheexam,hestayeduplatelastnight(此处的To可换为Inorderto)Whatwecantohelpprotecttheendangere
5、danimals.返回(4)“疑问词+不定式”用法不定式前可带what,who,which,where,when,how,whose,等疑问词。例:Hedidn’ttellmewheretogo.Idon’tknowwhattosaynow.Idon'tknowwhattodonext.Hetaughtushowtousethecomputer.返回