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1、非谓语动词—动词不定式不定式在句中充当成分1.Toseeistobelieve.2.TheoldwomanhopestotraveltoYangshan.3.Thedoctorpersuadedthepatienttogiveupsmoking.4.Tomhasmuchworktodo.5.Hesatdowntohavearest.6.Tobehonest,Iknownothingaboutit.主语和表语宾语宾语补足语定语状语独立成分作主语Tomasteraforeignlanguageisreallyimportantnowadays.Togiveupsmoki
2、ngisright.It’srighttogiveupsmoking.2).当今掌握一门外语真的很重要。3).放弃吸烟是对的。不定式短语做主语时，通常放在谓语的后面，用it作形式主语，避免头重脚轻。Eg:It’sveryimportanttolearnEnglishwell.It’sour/yourdutytokeeptheclassroomclean.It’s+adj/n+todosthIt’s+adj+for/ofsbtodosthEg:It’snecessaryforyoutostudyhard.(√)Youarenecessarytostudyhard.(×
3、)It’skindofyoutohelpme.=Youarekindtohelpme.二、不定式作表语a、不定式作表语，(表示主语的内容)如：b、在seem/appear(似乎，好像)，prove/turnout(被证明是)，remain(仍然是，尚待)等连系动词后，可用不定式作表语。如：Heseemed(tobe)veryhappy.4).Myjobis________________(teach)English.5).Havingatripabroadisgoodfortheoldcouple,butitremains___________(see)whethe
4、rtheywillenjoyit.toteachEnglish/teachingtobeseen三、不定式作宾语a部分及物动词必须用不定式作宾语：决心学会想希望：decide/determine,learn,want,expect/hope/wish拒绝设法愿假装：refuse,manage,care,pretend主动答应选计划：offer,promise,choose,plan同意请求帮一帮：agree,ask/beg,help6).Shepretended____________(notsee)mewhenIpassedby.nottosee7).Fred没有
5、钱，所以他决定找一份工作.8).他答应不告述任何人这事。Freddidn’thaveanymoney,sohedecidedtolookforajob.Hepromisednottotellanyoneaboutit.B用it作形式宾语（代替不定式）的动词有：Find,make,think,consider,feel,believeEg:Shefounditdifficulttolearnphysics.Theteacherthinksitnecessarytosayitagain.结构为:主语+动词+宾补（n/adj+todosth）Mymothermakesit
6、aruletotakeawalkeverymorning.4、介词but/except（除了）后接不定式：havenochoicebuttodosth.没有别的选择,只好做…但当but前有行为动词do时，but后的不定式省to.(9).Ihadnochoicebut_________(wait)herepatiently.(10).Sandycoulddonothingbut__________(admit)tohisteacherthathewaswrong.towaitadmit(11).I’veworkwithchildrenbefore,soIknowwha
7、t___inmyjob.expectedB.toexpectC.tobeexpectingD.expectsBEg:Hedoesn’tknowwhentostart.Let’sdiscusswhattodo.howtodoit.Canyoutellmehowtogettothestation?5.疑问+不定式在句中做宾语的用法。英语中有一些动词后可以跟一个疑问词的不定式做宾语，如：tell,discuss,know,show,learn,decide,wonder,explain作宾补Sheaskedmetostaythere.18.她叫我呆在这儿。19.请允许
