【正文】 d, make, think等后面，可以用it作形式賓語代替真正的賓語——?jiǎng)釉~不定式，句子結(jié)構(gòu)是...feel / find / make /...it+adj./ n.+to do...。如：I find it difficult to remember ，意思差別不太大的動(dòng)詞有begin, start, like, love等。一般說來，動(dòng)詞不定式表一次、數(shù)次的具體動(dòng)作、將來動(dòng)作或動(dòng)作的全過程，ving形式表習(xí)慣性的連續(xù)動(dòng)作。但是這種區(qū)別并不很嚴(yán)格，特別是美國英語，即使是習(xí)慣性的動(dòng)作也可以用動(dòng)詞不定式。如：1)Then I started to watch Englishlanguage )I’m beginning to understand my Chinese roots, and who I ，后面只接不定式作賓語，表示事情剛開始，還要繼續(xù)下去。3)I like to eat , love, know等一般不用進(jìn)行時(shí)態(tài)。，意思差別較大的動(dòng)詞有forget, remember等。后接不定式作賓語，表動(dòng)作尚未發(fā)生；后接ving形式作賓語，表動(dòng)作已經(jīng)發(fā)生。stop to do停下來做另外一件事，to do是目的狀語；stop doing停止做、不做當(dāng)前這件事，doing是賓語。try to do盡力做，try doing試試看；go on to do接著做另外的事，go on doing繼續(xù)做原來的事。如：1)When I left home, I had forgotten to bring it with )I stopped using them last 、用作定語，不定式與其所修飾的名詞、代詞等存在邏輯的動(dòng)賓關(guān)系時(shí)，用動(dòng)詞不定式的主動(dòng)式。如：1)I have so many chores to do )I cant think of any good advice to give )Basketball has also bee a more popular sport for people to , time, way等時(shí)，不定式與這些名詞呈現(xiàn)出動(dòng)狀關(guān)系或同位關(guān)系。如：1)He needs time to do )Is that a good place to hang out？3)You want to know the best way to get around the “there be...”句型里，句子的主語是動(dòng)詞不定式動(dòng)作的對(duì)象，常用主動(dòng)式。如：1)There’s just so much to see and do )...but there are still many things to do 、用作補(bǔ)語動(dòng)詞不定式作補(bǔ)語時(shí)，在主動(dòng)語態(tài)句里補(bǔ)賓語，在被動(dòng)語態(tài)句里補(bǔ)主語，句子的賓語或主語是不定式動(dòng)作的邏輯執(zhí)行者。如果不定式是to be done，句子的賓語或主語就是邏輯承受者。、被動(dòng)語態(tài)句里用帶to的動(dòng)詞不定式作補(bǔ)語的動(dòng)詞主要有：要求允許提議(ask, allow, permit, advise)，期望邀請(qǐng)鼓勵(lì)(expect, suppose, invite, encourage)，教導(dǎo)告訴想要(teach, tell, want)，等待希望愿意(wait for, wish, would like / love)。如：1)Id invite her to have dinner at my )Teenagers should be allowed to choose their own )Email English is supposed to be used on mobile ，在主動(dòng)語態(tài)句里不帶to，被動(dòng)語態(tài)句里帶to時(shí)多數(shù)動(dòng)詞是感官動(dòng)詞和使役動(dòng)詞，包括四“看”：look at, observe, see, watch，三“讓”：have, let, make，二“聽”：hear, listen to，一“感覺”：feel，一“注意”：notice。如：1)This picture makes me feel tense！2)Of course we want to see Liu Yu achieve his ，to可帶可不帶。一般說來，帶to表間接幫助，不帶to表直接幫助。在被動(dòng)語態(tài)句里，或者用不定式的否定式作補(bǔ)語時(shí)要帶to。如：1)...they can help you to pare two different products so that you can buy the one you really )Using English helps you write said, be sure, happen, seem等后面可以接帶to的動(dòng)詞不定式作主語的補(bǔ)語。如：1)He doesn’t seem to have many )Be sure not to miss them if they e to a city near 、用作狀語，置于句首或句末，置于句首時(shí)常表示強(qiáng)調(diào)。如：1)In order not to offend people, learning about language etiquette is just as important as learning grammar or )A group of young people got together to(in order to / so as to)discuss this question.(to do / in order to do / so as to do用作目的狀語，置句末時(shí)都可以用，置句首時(shí)只用to do / in order to do。so as to do一般不置于句首，可以引導(dǎo)結(jié)果狀語從句，in order to do不引導(dǎo)結(jié)果狀語從句。)，多見于“sb.+be+adj.+to do...”結(jié)構(gòu)句中。如：My dogs name is “Lucky”—a good name for him because I feel very lucky to have ，多見于“too...to”，“enough to...”結(jié)構(gòu)句中。如：1)Then I’m too tired to do should I do?2)The room needs to be big enough for three people to live ，常說明前面形容詞的性質(zhì)和特性。動(dòng)詞不定式與句子的主語有邏輯的動(dòng)賓關(guān)系。動(dòng)詞不定式前面的形容詞一般是：cheap, dangerous, difficult, easy, fun, hard, interesting, necessary。不定式常用主動(dòng)式表被動(dòng)意義。...the mistakes you made are necessary for you to learn and 。，表示說話人的心理狀態(tài)或?qū)κ虑榈目捶?。如?)Id like to stay healthy, but to be honest, I only eat food that tastes )To begin with, she spoke too quickly, and I couldn’t understand every 、動(dòng)詞不定式的復(fù)合結(jié)構(gòu)動(dòng)詞不定式的復(fù)合結(jié)構(gòu)是“for / of do sth.”，for / of引出不定式動(dòng)作的邏輯主語。這種結(jié)構(gòu)在句子中可以作主語、賓語、表語、定語、狀語等。不定式復(fù)合結(jié)構(gòu)的介詞用for還是of，主要決定于前面形容詞的性質(zhì)。一般說來，of前面的形容詞是careful, clever, foolish, good, kind, nice, wise等，既說明人的特性，又說明不定式動(dòng)作的特性。for前面的形容詞是dangerous, difficult, easy, hard, heavy, important, interesting, necessary等，一般說明不定式動(dòng)作的特性，不說明人的特性。前面如果是名詞用for。如： also probably a good idea for parents to allow teenagers to study in groups during the are terrible places for animals to 、帶疑問詞的不定式短語動(dòng)詞不定式前面可以帶疑問代詞what, which, who或疑問副詞how, when, where, why等。這種結(jié)構(gòu)起名詞的作用，在句子里用作賓語、主語、表語等，或者單獨(dú)使用。要注意的是，why后面的不定式不帶to。如：。1)I don’t know what to try next.(作賓語)2)Where to go is not decided yet.(作主語)。1)What to do next?(=What will we / you do next?)2)Why go there?(=Why do we / you go there?)九、動(dòng)詞不定式的否定式不定式的否定式是not / never to do...，不帶to的不定式的否定式是not / never do...如： they have disagreements, and decide not to talk to each parents tell him never to drive after ．不帶to 的 Couldyou please do had better do why not do