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动词不定式的句子成分一、动词不定式作主语：eg.Toplayfootballisveryinteresting.常用It作形式主语，后面的不定式短语是真正主语。→It'sveryinterestingtoplayfootball.（1）Ittakessb.sometimetodosth.如：Ittookmetwohourstodomyhomeworkyesterday.（2）It’simportantforustolearnEnglishwell.（3）It’skindofyoutohelpme.二、动词不定式作宾语：decidetodosth.;trytodosth.;wanttodosth.;plantodosth.promisetodosth.;forgettodosth.等(1)Iplantostaythereforthreedays.(2)Idecidenottoplaycomputergamesanymore.三、动词不定式作宾语补足语（宾补）：asksb.todosth.;tellsb.todosth.;wantsb.todosth.allowsb.todosth.等如（1）Itallowspeopletogetclosertothem.（2）Motheroftentellsmetostudyhard.宾语宾语宾补宾补总结：1.当不定式直接跟在动词之后，是作宾语；2.当不定式之前有sb./sth.时，是作宾补。四、动词不定式作后置定语：如(1)Canyougivemesomethingtoeat?（作后置定语）(2)Ihavealotofhomeworktodo.(3)Manywildanimalsdon’thaveasafeplacetolive.五、动词不定式作状语：如(1)Iusuallygohometohavelunch.(作状语，表目的)(2)I’msorrytohearyourmotherisill.(作状语，表原因)(3)I’mexcitedtoseepandas.(作状语，表原因)15.①Myjobis_____________(teach)youEnglish.②Betty’sdreamis____________(be)ascientist.③Mywishis___________(go)touniversity.④Ourplanis__________(see)theplayintheteahouse.⑤Ourgoal(目标)is_________(win)thefinalmatch总结：上述5个句子都是_____________用在系动词be（是）之后做_____________。toteachtobetogotoseetowin表语动词不定式中考热点1.Theiceinthelakeisas___asitwasbefore.A.thinB.thinnerC.thinnestD.thethinnest2.---HowcanIspeakEnglish____you?---You'dbetterspeakmore.Ithink.A．asgoodasB.morethanC.aswellasD.asmuchasAB