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1、初中英语语法专项非谓语动词什么是非谓语动词谓语动词：在句子中担任谓语的动词非谓语动词：是动词的特殊形式，在句中可以作除谓语外的所有成分(主宾定状补)谓非谓语动词的使用条件一个句子当中，已经存在一个主句（谓语动词）,又没有连词的情况下,还有别的动词出现时。Shegotoffthebus,leavingherhandbagonherseat.Shegotoffthebusbutleftherhandbagonherseat.非谓语动词的形式动词不定式（to+动词原型）Toseeistobelieve动名词Smokingdoesgrea
2、tharmtopeople’shealth非谓语动词的形式现在分词Doyouknowtheboystandingatthegate?过去分词Weareexcitedatthenews.动名词和现在分词的区别动名词常泛指，不含任何进行意。相当于名词。现在分词有进行意，相当于形容词。1、aswimmingboy和aswimmingsuit2、asleepingchild和asleepingcar一．动词不定式的时态和被动形式动词不定式是非谓语动词的一种，由不定式符号(to)加动词原形构成。不定式的形式有五种1、一般式todo例如：Il
3、iketoreadEnglish.2、进行式tobedoing例如：Heseemedtobereadingsomethingatthattime.3、完成式tohavedone例如：Heseemedtohavecleanedtheroom.4、被动式tobedone例如：Theworkistobedonesoon.5、完成被动式tohavebeendone例如：Theboyissaidtohavebeensenttohospitalyesterday.二.动词不定式的用法I.作主语(1)不定式做主语时，可以直接放在谓语动词之前。T
4、oseeistobelieve．Nottogetthereintimeisyourfault.主语(2)常用it做形式主语，将todo放在位于之后，使句子保持平衡。句型1：It+谓语+todoIttakesusanhour_to__gettherebybus.句型2：It’s+n.+todoIt’sourduty_to_helpthepoor.Itisagreatenjoyment_to_spendourholidayinthemountains.句型3：Itis+adj+forsbtodosth（是形容事物的性质的）Itis+a
5、dj+ofsbtodosth（是形容人的品质的）Itiseasyformetofinishthisworkbeforeten.Itisagreathonorforustobepresentatyourbirthdayparty.Itisverykindofyoutogivemesomehelp.It'simpoliteofyoutospeaktotheteacherlikethat.II.作宾语①接不定式做宾语Iwanttoknowthismatter.Idon’texpecttomeetyouhere常见后面接不定式的动词lik
6、e,demand,expect,promise,begin,determine,refuse,offer,fail,manage,learn,seem,intend,forget,want,prepare,pretend,refuse,plan,afford,wish等(2)it作形式宾语Ifind/feeltoworkwithhiminteresting．句型Subject+find/think/feel/make/consider…it+adj/n+todosth.Ifind/feelitinterestingtoworkwi
7、thhim．We thought ___ better ___ start early.Do you consider ___ better not __ go?I feel __ my duty __ change all that.Wethinkit__important__obeythelaw.Iknow__impossible__finishsomuchhomeworkinaday.ittotoittoittoittoitto(3)常跟疑问词+不定式作宾语的动词:tell,advise,show,teach,findout
8、,decide,discuss,learn,explain,know,discover,例句Hetaughtushowtousethetool.Noonecouldtellmewheretogetthebook.Ihaven'tdecidedwhe
