【正文】 ion is how to put it into practice.問題是怎樣把它付諸實施。如：We think it quite important for us to learn a foreign language well.He feels it his duty to help the poor.I find it difficult to learn English well.作補語1) 動詞+賓語+不定式(to do)常見動詞：advise，allow，believe，cause，challenge，pel，declare，encourage，forbid，force，　find，hire，induce，instruct，invite，like，order，permit，persuade，remind，request，require，select，send，suppose，tell，train，urge例句：a.　Father will not allow us to play on the street.父親不讓我們在街上玩耍。2) to + be 的不定式結(jié)構(gòu)，作補語的動詞。3) to be +形容詞常見動詞：Seem,　appear,　be said,　be supposed,　be believed,　be thought,　be known,　be reported,　hope, wish,　desire,　want,　plan,　expect,　mean…The book is believed to be uninteresting.人們認為這本書沒什么意思。t expect there to be so many people 。Mary took him as her father .　瑪麗把他當作自己的父親。用禿頭不定式作賓語補足語的常用動詞如下：口訣：“五看、三使役“，“兩聽、一感”要記住，若是“賓補”變“主補”，主補“to”字不能無。說明：五看see/watch/notice/observe/look at；三使役have/make/let；兩聽hear/listen to；一感feel。后可用分詞做賓補，或先加形式賓語，再加形容詞，最后加帶to 的動詞不定式。此類動詞還有g(shù)et，have。①To be kind to the enemy is to be cruel to the people.②My chief purpose is to point out the difficulties of the matter.③What I would suggest is to put off the meeting.當主語和表語都是不定式時，其含義一是條件，一是結(jié)果（例①）。④Our work is serving the people.⑤What he likes is taking a walk after supper.⑥The story told by is interesting.④⑤句動名詞作表語，與主語部分可以轉(zhuǎn)換，如Serving thepeople is our work,而⑥句中是現(xiàn)在分詞作表語，說明主語的性質(zhì)、狀態(tài)，現(xiàn)在分詞具有形容詞的各種特征，另外，動名詞作表語還應(yīng)與進行時態(tài)區(qū)別開來。I e here only to say goodbye to you.　我來僅僅是向你告別。What have I said to make you angry.He searched the room only to find nothing.（3)　表原因I39。當動詞與介詞連用時，常位于“形容詞+動詞不定式”結(jié)構(gòu)的末尾。如：①The next train to arrive is from Washington.②Do you have anything to be taken to your sister?③Do you have anything to say on the question?④Would you please give me some paper to write on?⑤My wish to visit France has e true at last.不定式短語作定語和被修飾詞之間表示以下關(guān)系：(1)表示將來的動作（例①）。(3)與被修飾詞之間有動賓關(guān)系，同時與句中其它詞之間又有邏輯上的主謂關(guān)系時，盡管有被動含義，卻仍 用主動語態(tài)（例③）；如只有動賓關(guān)系，而無邏輯上的主謂關(guān)系，則需用被動語態(tài)（例②）。相關(guān)省略（1）情態(tài)動詞( 除ought 外，ought to意思是“應(yīng)該”，是情態(tài)動詞，只有一種形式，后邊接動詞不定式，to不能省略。例如：They ought to e )：（2）使役動詞let,have,make：（3）感官動詞see,watch,look at,notice,observe,hear,listen to,smell,feel,find 等后作賓補，省略to。在使役動詞中g(shù)et除外(get sb. to do sth.)I saw him dance.=He was seen to dance.The boss made them work the whole night.=They were made to work the whole night.（4） 表示個人意愿或傾向的would rather，had better，might(just) as well：rather than置于句首時。（8） 由and,or和than連接的兩個不定式，第二個to 可以省去：（9） 通常在discover,imagine,suppose,think,understand等詞后，可以省去to be：He is supposed (to be) nice.　他應(yīng)該是個好人。He wants to do nothing but go out.He wants to believe anything but to take the medicine.（11）當兩個或多個不定時短語由連詞and，but或or連接時，后一個或幾個不定式符號to常省略。He wants to move to France and marry the girl.The purpose of new technologies is to make life easier,not to make it more difficult.（12）不定式做表語時，一般要帶to，但若主語部分中含有do的各種形式時，符號to可省去。ve missed the last we could do now is walk home.否定式Tell him not to shut the window…She pretended not to see me when I passed by. 我走過的時候，她假裝沒看見。Tom kept quiet about the accident so as not to lose his 。（2)　so kind as to ——勞駕Would you be so kind as to tell me the time?勞駕，現(xiàn)在幾點了。s for It39。s very hard for him to study two languages. 對他來說學兩門外語是很難的。It39。for 與of 的辨別方法：用介詞后面的代詞作主語，用介詞前邊的形容詞作表語，造個句子。如：You are nice.　(通順，所以應(yīng)用of)。)不定式的特殊句型too…to…（1）too…to　太…以至于…He is too excited to ，說不出話來。m afraid the box is too heavy for you to carry it,but thank you all the same.　不用了。謝謝您。It39。（3)　當too 前面有only,all,but時，意思是：非?！?等于very。m only too pleased to be able to help you. 我非常高興能幫助你。相互區(qū)別不定式與介詞to區(qū)別to 有兩種用法：一為不定式+動詞原形；一為介詞+名詞動名詞，to 在下面的用法中是第二種，即to+ 名詞/動名詞：admit to承認，confess to承認，be accustomed to 習慣于，be used to 習慣于， stick to 堅持， turn to開始，著手于， devote oneself to 獻身于，　be devoted to 致力于， look forward to 盼望，pay attention to 注意介詞but,except,besides+to do(do)在這種句型中，如介詞前有動詞do，后面應(yīng)接不帶to的不定式；如無do，則接to不定式，即帶do不帶to， 帶to不帶do。d like to have a cup of coffee.②當謂語動詞begin,continue,start等是進行式