专题三非谓语动词英语外研版◆非谓语动词的考查要点1.动词不定式复习中应注意的几个问题(1)不定式作表语与“be+todosth.”的异同。不定式作表语说明主语的内容或性质。MyjobistoteachEnglish.(说明内容)be+todosth.(表示按计划要做的事)Heistogoabroad.(2)后接不定式作宾语的词语。下列词语常接不定式作宾语:afford,promise,refuse,expect,hope,learn,offer,wish,want,fail,plan,agree,forget,like,prefer,decide,manage,try,arrange,determine,desire等。下列词语后可接“疑问词+不定式”:teach,decide,wonder,show,learn,forget,ask,findout,advise,discuss等。(3)如何理解和使用不定式作宾补。①动词(短语)see,watch,notice,hear,listento,observe,feel,taste,smell,make,let,have等的宾补用动词原形,变被动时要加to,此时的不定式就是主语补足语。②常用不定式作宾补的几种情况:主语+ask/require/tell/order/force/get/want/like+sb.todosth.主语+think/judge/suppose/believe/consider/imagine/feel+sb.+tobe/tohavedone主语+callon/upon/dependon/waitfor/askfor+sb.+todosth.(4)不定式作定语的特殊用法。①下列词语后常接不定式作定语:chance,wish,right,courage,need,promise,time,opportunity,way,thefirst,thesecond,thelast,theonly等。②不定式作定语和所修饰的名词在逻辑上有主谓关系。Thereisnoonetolookafterher.③不定式与被修饰的名词在逻辑上有动宾关系。Sheisnowlookingforaroomtolivein.(5)不定式作状语的用法。不定式作状语,在句中主要表示目的、结果、原因等。onlytodo表示出人意料的结果。Wehurriedtotheclassroomonlytofindnonethere.inorder(not)to,soas(not)to用来引导目的状语;enough...to,so...astodo,such+名词...astodo作结果状语。Thegirlwassokindastohelptheoldmanoffthebus.I’mnotsuchafoolastobelievethat.(6)不定式的完成时的特殊用法。①表示不定式中谓语动词发生的动作先于主句的谓语动词发生的动作。Thenovelwassaidtohavebeenpublished.Iregrettohavebeenwithyouforsomanyyears.seem,appear,besaid,besupposed,bebelieved,bethought,beknown,bereported等动词常用于上面句型。此外,glad、happy、satisfied、sorry、surprised、disappointed后也接完成时,但要注意与一般时的区别。I’msorrytokeepyouwaitingforaminute.对不起,请稍等。(说话时还未等)I’msorrytohavekeptyouwaiting.对不起,让你久等了。(说话时已等了很久)②不定式的完成时还可表示“过去本想做某事但未做”的虚拟语气。(A)shouldliketo/wouldliketo/wouldloveto+完成时。(B)was/wereto+不定式的完成时,表示该做某事或想做但未实现(C)expect/hope/mean/promise/suppose/think/want/wish+不定式的完成时,表示过去未曾实现的愿望。(7)不定式的省略。①同一结构并列由and或or连接。Iwanttofinishmyhomeworkandgohome.I’mreallypuzzledwhattothinkorsay.特例:Tobeornottobe,thisisaquestion.Itisbettertolaughthantocry.(表示对比)②不定式作表语,其前面的主语从句中含有do时,后面的to省略。Whathedidwaslosethegame.③句中含有动词do时,but,except,besides,suchas等后面的to可省略。即“前有do,后省to”。Don’tdoanythingsilly,suchasmarryhim.④主句含有不定式,后面有ratherthan,ratherthan后省to。⑤Whynot,hadbetter,wouldrather,can’tbut等词后省to。You’dbettertakeitseriously.⑥多用在同一句或联系紧密的对话中,为了避免重复,作宾语、主补或宾补的不定式再次出现时,to后的内容常承前省略(只保留to即可)。但如果承前省略的不定式有助动词have或be的任何形式,后应该保留原形have或be。Susanisnotwhatsheusedtobe.—Youcamelatelastnight.Yououghttohavefinishedyourhomework.—IknowIoughttohave.常见的有:I’dlike/love/behappyto。题组训练1用所给动词的适当形式填空1.It’simportantforthefigures(update)regularly.2.Todaywehavechatrooms,...