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1、动词不定式1不定式主语Toimprovetheagriculturallandneedsalotofmoney.2不定式作表语Myworkistocleantheroomeveryday.Hisdreamistobeadoctor.3不定式作宾语1)动词+不定式afford aim agree arrange decide choose dare demand desire determine endeavor hope fail happen hesitate learn mean manage offer ought plan prep
2、are pretend promise refuse seem tend wait wish undertake举例: Thedriverfailedtoseetheothercarintime. Ihappentoknowtheanswertoyourquestion.2)动词+疑问词+todecide,know,considerforget,learn,remember,show,understand,see,wonder,hear,findout,explain,tellPleaseshowushowtodothat.Therearesoman
3、ykindsoftape-recordersonsalethatIcan'tmakeupmymindwhichtobuy.4不定式作宾补1)动词+宾语+不定式(todo)advise allow appoint challenge command compel enable encourage forbid force hire imagine impel instruct invite order permit persuade request require send tell train t
4、rust urge warn 例句: Fatherwillnotallowustoplayonthestreet. Webelievehimtobeguilty.5不定式作定语 Ihavealotofworktodo. Sohemadesomecandlestogivelight.6不定式作状语Heransofastastocatchthefirstbus.Hesearchedtheroomonlytofindnothing.7用作介词的toadmitto承认,confessto承认,beaccustomedto习惯于, beusedto
5、习惯于,stickto坚持,turnto开始,着手于,devoteoneselfto献身于, bedevotedto致力于,lookforwardto盼望,payattentionto注意Iamlookingforwardtoreceivingyourletter.Heisusedtosmoking.8省to的动词不定式1)使役动词let,have,makeTheteacherletusplaybasketball.2)感官动词see,watch,lookat,notice,observe,hear,listento,smell,feel,find等后作宾补,省
6、略to。注意:在被动语态中则to不能省掉。 Isawhimdance. =Hewasseentodance. Thebossmadethemworkthewholenight. =Theyweremadetoworkthewholenight.3)wouldratherdothando,hadbetterdo,may(might)aswelldo,donothingbut(except)do,whynotdosth.Iwouldratherstayathomethangoout.Icandonothingbutwaitforhim.典型例题1)----Iusua
7、llygotherebytrain. ----Whynot___byboatforachange? A.totrygoing B.tryingtogo C.totryandgo D.trygoing 2)Pauldoesn'thavetobemade___.Healwaysworkshard. A.learn B.tolearn C.learned D.learning9动词不定式的否定式Tellhimnottoshutthewindow. ShepretendednottoseemewhenIpassedby.1)Tellhim___thewindow.
8、 A.toshutnot