江苏省新沂市第二中学高中英语《Unit1Grammarandusage(2)》教案新人教版必修5教学目标Enlargestudents’tolearnsomethingaboutTo-infinitiveandBareinfinitiveLetthemknowthefunctionsofTo-infinitiveandBareinfinitive重点TrytouseTo-infinitiveandBareinfinitive难点HowtomakethemtouseTo-infinitiveandBareinfinitivecorrectly教法及教具Talking,Practicing教学过程教学内容个案调整教师主导活动学生主体活动Step1Introduction动词不定式的形式:1.一般式:表示的动作通常与主要的谓语动作同时或几乎同时发生,或是在它之后发生.(not)todo(主动)tobedone(被动)e.g.:Iamgladtoseeyou.Thehouseneedstobecleaned.2.进行式:表示谓语的动作或情况发生时,不定式表示的动作正在进行.tobedoing(主动)e.g.:HepretendedtobereadingwhenIcamein.3.完成式:表示不定式的动作发生在谓语动作之前或表动作发生在过去并且已完成。tohavedone(主动)tohavebeendone(被动)e.g.:I’msorrytohavelostyourkey.Ithasbeenanhonorformetohavebeeninvitedtoyourcountry.4.完成进行式:表示不定式的动作在谓语动作之前发生并一直进行着.tohavebeendoing(主动)e.g.:HewassaidtohavebeenlivinginLondonfor20years.主动式被动式一般式todotobedone进行式tobedoing无完成式tohavedonetohavebeendone完成进行式tohavebeendoing无不定式的常见结构:1.用作独立成分.有一些不定式短语可以用作状语修饰整个句子,也可被称为插入语.e.g.:Tobehonest,wearenotsuretoworkouttheproblem.Tobefrank,Idon’tagreewithyou.totellyoutruth说老实话tobeginwith首先tosaynothingof姑且不说tobesure诚然,固然tomakealongstoryshort长话短说tobebrief简言之toconclude总而言之2.疑问词+不定式结构疑问词who,what,which,when,where,how,why后加动词不定式构成不定式短语,它在句中作主语、宾语和表语.e.g.:Howtosolvetheproblemisveryimportant.Hedidn’tknowwhattosay.Myquestioniswhentostart.3.不定式的复合结构,即Itis+形容词+for/ofsb.+不定式在“Itis+形容词+ofsb.+不定式”的结构中,形容词往往表示人物的性格和特征,如:kind,silly,good,clever,wrong,right,foolish,careless,impolite,honest,bad等.e.g.:Itiskindofyoutothinksomuchofme.Itisfoolishofyoutosaythat.在“Itis+形容词+forsb.+不定式”的结构中,形容词往往表示事物的性质,如:important,possible,impossible,necessary,difficult,hard,reasonable等.e.g.:Itisnecessaryforyoutocompletetheprogramontime.Itishardforhimtogetridofhisbadhabits.Bareinfinitive不定式的特殊用法:1.在hadbetter,hadbest,wouldrather,wouldrather…than,wouldsooner,cannotbut,cannothelpbut,whynot等结构后直接跟动词原形或“not+动词原形”.e.g.:You’dbetterlistentoyourteacher’sopinion.Hecannotbutmovetoanotherstreet.Wecannothelpbutadmirehiscourage.Healwayspreferstorideabicycleratherthanrideonacrowdedbus.2.两个不定式由and,or,except,but,whether等并列使用时,为了避免重复,后面的不定式符号to可省略.e.g.:Thelittlegirlhardlyknewwhethertolaughorcry.Canyouhelpmetocallhimandaskhimtoattendthemeeting?3.不定式符号的单独使用。为了避免重复上文中出现过的动词,可以用不定式符号to来代替上文中出现过的不定式结构.(1)在助动词或情态动词之后,如begoingto,usedto,haveto,oughtto,beableto,beaboutto等。e.g.:Shehastogo,butyoudon’thaveto(go).(2)在want,decide,like,love,hope,wish,mean,refuse,try等动词之后.e.g.:Youmaygowiththemifyouhopeto(go).(3)在作宾语补足语的ask,tell,order,advise,persuade,warn,wish,permit,allow等动词之后.e.g.:Don’tdoanythingunlessyourfathertellsyouto(do).(4)在对话的答语中的happy,glad,anxious,willing,ready,pleased,afraid等形容词之后.e.g.:-Willyoulendmeahand?-I’mwillingto(lendyouahand).板书设计教学札记