常見的含有動詞不定式的句式

常見的含有動詞不定式的句式主要有以下幾種：一.Ittakessb.sometime（money）todosth.某人花費(fèi)多少時(shí)間（金錢）做某事。例如：ItoftentakesmehalfanhourtowatchTVeveryevening.每天晚上我常常用半小時(shí)看電視。Ittookmetenyuantobuythebooklastweek.上周我花了10元買那本書。Howlongwillittakethemtofinishthework完成那項(xiàng)工作需要花費(fèi)他們多少時(shí)間在使用該句式要注意的是：sb.如果代詞表示用賓格；take隨時(shí)態(tài)改變；句中的時(shí)間用段時(shí)間，對此提問用howlong。例：Ittakesusmorethantwohourstodoourhomeworkeveryday.Ittookusmorethantwohourstodoourhomeworkyesterday.Itwilltakeusmorethantwohourstodoourhomeworktomorrow.Howlongdidittakeyoutodoyourhomeworkyesterday二.It'stimetodosth.該做某事了，同義句為：It'stimeforsth./doingsth.It'stimetogotoschool.該上學(xué)了。(It'stimeforschool.)It'stimetogetup.該起床了。(It'stimeforgettingup.)此句可以擴(kuò)展為:It'stimeforsb.todosth.是某人做某事的時(shí)間了。forsb.todosth.是動詞不定式的復(fù)合結(jié)構(gòu)。例：It'stimeformetowork.到我工作的時(shí)間了。It'stimeforyoutogotoschool.到你們上學(xué)的時(shí)間了。主語+be(not)+adj.+enoughtodosth.(某人、某物)足夠(不能)做某事。例：Theboyisoldenoughtogotoschool.這個(gè)孩子到了上學(xué)年齡。I'mtallenoughtoreachthetopofthetree.我夠高能夠到樹頂。*1.此句是肯定句時(shí)，可以用主+be+so+adj.+that的句型(即so...,that…表示的結(jié)果狀語從句)來替換。Theboyissooldthathecangotoschool.I'msotallthatIcanreachthetopofthetree.2?此句是否定句式時(shí)，既可以用so.that…引導(dǎo)的結(jié)果狀語從句來替換，還可以用too...to...句式替換。例:Heisnotoldenoughtogotowork.他太小不能去上班。Heissoyoungthathecan'tgotowork.Heistooyoungtogotowork.再如：Theboxisnotlightenoughformetocarry.這個(gè)箱子太重我搬不動。Theboxistooheavyformetocarry.TheboxissoheavythatIcan'tcarryit.sb.+beready+todosth.（某人樂意做某事）Heisalwaysreadytohelpothers.（他總是樂于幫助別人）I'malwaysreadytomakenewfriends.我總是樂于結(jié)交新朋友。It's+adj.+for/ofsb.todosth.對某人來說做某事.dangerousforchildrentoplayfootballinthestreet.對孩子來說在街上踢足球是很危險(xiǎn)的。It'sgoodforustotakemoreexercise.對我們來說多運(yùn)動是有益的。It'sverykindofyoutosayso.你這樣說真是太好了。It'sverykindofyoutohelpme.你真好，肯幫我。該句式中，引導(dǎo)動詞不定式的邏輯主語的介詞用for還是of,主要取決于前面的形容詞。如果形容詞是描述動詞不定式的行為者的性格、品質(zhì)的。如：kind,good,nice,wrong,right,clever,careless,foolish等，應(yīng)用of；如果形容詞僅僅是描述事物，不是對動詞不定式的行為者的品質(zhì)進(jìn)行評價(jià)的，就用for.常見這類形容詞有difficult,easy,hard,important,dangerous等。It'swrongofyoutodoit.你做這件事是錯(cuò)的。It'shardforyoutobealawyer.對你來說做律師很困難主+wouldlike/lovetodosth...喜歡（想做某事）I'dliketogotherewithyou.我很想和你一起去那。I'dloveIliketohelpyoustudyEnglish.我很愿意幫你學(xué)英語。此句式還可以擴(kuò)展為：wouldlike/lovesb.todosth.“喜歡/想讓某人做某事。”I'dlikeyoutostayhere.我想讓你留在這。I'dlikethemtohelpme.我想讓他們幫助我。hadbetterdosth.（.最好做.）It'sverycoldoutside,you'dbetterputonyourcoat.外面很冷，你最好穿上大衣。We'dbettergorightnow.我們最好馬上去。...hadbetterdo的否定式為...hadbetternotdo.（在better后加not即可）例：You'dbetternotspeakwhenyourmouthisfulloffood.滿嘴食物時(shí)你最好別講話。.Whydon'tyou+動詞原形+...（Whynot+動詞原形…）你為什么不…這本書有點(diǎn)難，為什么不讀些容易的Thisbookisabithard,whynotreadsomethingeasierIt'swarmhere,whydon'tyoutakeoffyourcoat這很暖和，你為什么不脫掉外衣Thereisaseat,whynotsitdown還有座位，怎么不坐下Would/Will/Couldyouplease+動詞原形+.請你.好嗎（用來請求對方為自己做某件事）Wouldyoupleasebringsomewaterwithyou請你帶點(diǎn)水來好嗎Willyoupleasehelpherwithhermaths請你幫她學(xué)數(shù)學(xué)好嗎十..prefer.todosth.ratherthandosth..寧愿.也不愿.Iprefertostayathomeratherthangoout.我寧愿呆在家里，也不愿出去。Shepreferstobepoorratherthangetmoneyinsuchaway.她寧愿受窮也不愿以這種方式掙錢。十一.It'sone'sturntodosth.該輪到誰做某事了。one's用形容詞性物主代詞或名詞所有格來替換。例：It'smyturntobeonduty.該輪到我值日了。It'sLiPing'sturntocleantheblackboard.該輪到李平擦黑板了。It'sourturn