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1、RevisionNonPredicateverbs非谓语动词性质：它具有动词的特点，但在句子中起着名词、形容词、副词的作用，充当主语、表语、定语、宾语、宾语补足语、状语的作用，即：除谓语以外一切成分。非谓语动词非谓语动词不定式动名词分词不定式的基本形式是to+动词原形，相当于具有名词、形容词、副词的作用，可充当主语、宾语、定语、表语、宾语补足语、状语。动词不定式Toinfinitive重点用法'To'-infinitivesSubject（主语）动词不定式Tolearnaforeignlanguageisnoteasy.
2、注意：不定式短语作主语如果太长，常用It作形式主语，将不定式后置。=It’snoteasytolearnaforeignlanguage.Itis+adj.+of/forsb.todo…whentouse‘of’whentouse‘for’Itis+adj.+forsb.todo…easy,hard,difficult,important,possible,necessary…Itis+adj.+ofsb.todo…=Sb.is+adj.+todo…good,kind,nice,rude,clever,right,sil
3、ly,thoughtful,brave,selfish…2.It’sverykind________________________________________me.你帮助我真是太好了。3.It’swise________________________________________amapwithher.她随身带着一张地图真是明智。ofyoutohelpoftotakeher1.It’simportant_________________________________________theenvironment
4、.对我们来说保护环境是重要的。forustoprotect重点用法'To'-infinitivesObject（宾语）动词不定式有些及物动词常用不定式作宾语。常见的动词有agree,decide,fail,hope,wish,offer,manage,want,plan,promise,fail,prefer等.2.动词+疑问词+todo(相当与一个宾语从句）.Hedidn’tknow_____________________________.他不知道去哪儿。Hesaidhewished__________(be)ane
5、ngineer.tobetowherego(=Whereheshouldgo.)3.在find,think,believe后作宾语时，常用it代替(形式宾语)，将真正的宾语放在句末。Ithinkitimportant________________________________________.我认为学好英语很重要。Hefeelsithisduty____________(help)thepoor.towellEnglishlearntohelp重点用法'To'-infinitivesObjectcomplement（
6、宾补）动词不定式有以上结构的常用动词有tell.wish,ask,want,allow,wouldlike,beg,invite,warn,encourage,advise等。LiMeiaskedmetoshowherthenewdictionary.a.动词+宾语+todo常用的动词是：感官动词see,hear,feel,watch,notice；使役动词have,make,let.b.动词+宾语+do(不带to的不定式)WeoftenhearhimreadEnglishearlyinthemorning.1.Mymo
7、therallowedme______________________________attheweekends.妈妈允许我周末看电视。2.Thepolicemanwarnedtheboys________________________________________ontheroad.警察警告男孩们不要在马路上踢足球。3.Letme__________(help)yousolvetheproblem.4.Thegirlsweremade______________(work)twelvehoursaday.towat
8、chTVnotplayfootballhelptoworkto在感官动词和使役动词后作宾补时，变为被动语态时，要加上to重点用法:'To'-infinitivesAttributive（定语）Adverbial状语Predictive（表语）动词不定式其它用法:‘Wh-words’+’to’-infinitives作
