【正文】 句，表示“可能，可能??嗎?”，其否定式can’t / couldn’t 表示“不可能”。對不同的時間內(nèi)容推測有不同的結構。這是情態(tài)動詞的一種虛擬語氣用法。表達了說話人的埋怨，后悔的語氣。根據(jù)要表達的意思，有如下結構：should have done / ought to have done：本應該??shouldn’t have done / oughtn’t to have done：本不該??could have done：本來可以??needn’t have done：本來沒必要??would like to have done：本來很想??would rather not have done: 本來不愿意??could / might / have done: 不然早就?? 例句： shouldn’t have laughed at his could have told us ought to have bought that dictionary last ought not to have spent so much time in reading need not have been in a tearing hurry to catch the would like to have seen that film last he had given me his number, I could have telephoned might have been frozen to death but for the rescue in ：某些情態(tài)動詞的特殊用法：need 和dare 的兩種形式的用法need 和dare可以用做實義動詞，后面接不定式（to do）結構，在疑問句和否定句中，加助動詞do/does/did/或don’t/doesn’t/didn’t。情態(tài)動詞needn’t（沒有必要，不必）相當于don’t have to 例句： is cold, you need to wear some warm I stay here with you for a while ? Thank you, you needn’ dare you speak to parents like that ? 注意：句型I dare say+從句。例句：I dare say that my uncle will get the money if I 表示“意志”或“愿意”，would 則指過去愿意做?? 例句： said that he would help may telephone if you will accept this “過去習慣做??”類似于“used to do” 例句： we were children, we would go swimming every summer in that ，固定的句型：Will/Would you please do?? / Would you like to do?? 例句：Will/Would you please give him a message when you see him ? shall ，三人稱，表示“請求”；“建議”或“推薦” 例句： we start the meeting now? I watch TV now ? my son carry the case for you ? ，表示“命令，“要求”，“許諾” 例句： shall take whatever you shall not go to the party with me if you make so much noise ，常用can /can’t /could / couldn’t表示，意思是：“可能?嗎?”；“?不可能?”?！镜湫屠}】1.—Do you think he will do me a favor ? —As far as I know, he is the last one to help _____ be prepared to give you a hand, 分析：本題考查情態(tài)動詞推測性用法。答案為A 2.—Look, someone is who it ____ be ? —I think it ___ be Tom.—I don’t think it ___ be 。can。can。him 。must。must。himself 分析：根據(jù)備選答案。本題首句就應該是Guess who can it be? 第二句應該是I think it must be Tom.（說話人十分肯定）。即：I don’t think it can be him/he.（不可能是他）。根據(jù)句子語境：她此刻肯定正在校園散步呢。答案為A 4.—I stayed at a hotel in New York.—Oh, did you ? You _____ with have stayed stay say have stayed 分析：首句說：我在紐約住在一家賓館里。所以D選項不合題意。Could have done表示：本來可以。Needn’t have done表示本來沒必要?！半x開家”已經(jīng)發(fā)生了。答案為B ：Are you ing to Jeff’s party ? B：I’m not _____ go to the concert 分析：根據(jù)B的回答：我不一定去，我有可能去聽音樂會。答案為D ：I promise that she ____ get a nice present on her ：Will it be a big surprise to her ? 分析：A說：“我答應她在生日聚會上她會得到一份生日禮物。答案為D 【模擬試題】：Is John ing by train ? B：He should, but he _____ likes driving his _____ at 8:30 for the meeting, but he didn’t show have arrived arrive have had arrived be arriving , I’m _____ have turned off the alarm and gone to sleep _____ be tired—You’ve only been working for an not ’t ’t not5.—I didn’t go to work yesterday afternoon because my car broke down.—You _____ wasn’t using borrow have borrowed have borrowed to borrow 6.—A man answered the suppose it was her husband.—It _____ her has been dead for ’t be ’t have been not have been ’t have been【試題答案】：根據(jù)B的回答“他應該（坐火車來），但是也不一定，他喜歡開自己的車。may表示不十分有把握的推測。Should have done表示：本應該。might have done 表示對過去的推測：可能已經(jīng)??答案為A ：根據(jù)后半句You’ve only been working for an hour.（你才剛干了一個小時）說明You _____ be tired（你不可能很累），can’t 表示“不可能”答案為C ：聽到對方說“昨天車壞了而沒去上班”，第二個人說“你本來可以借我的車去 上班。根據(jù)對 話的語境，是在談論過去的事，表示過去不可能：could not have done 答案為：B與it有關的主要句型it強調(diào)句型知識總結歸納：（一）it用做形式主語或形式賓語：根據(jù)句子結構的需要，it用做形式主語或形式賓語，而真正的主語或賓語（to do 短語，doing短語，名詞性從句）則放在句尾。便形成了一種強調(diào)句型。It is / was not until+時間+that+句子的其他部分。 is it that Joe can’t find in the bathroom ? was it that you met the foreign guests from Australia? can’t quite remember when it was that we it because he was very ill that he asked for leave?（二）是強調(diào)句型還是that主語從句或其他復合句 is a fact that English is being accepted as an international is these poisonous products that can cause the symptoms of the flu, such as headache and aching was almost ten o’clock when our soldiers came back from the it in this place that the last king died ?（三）注意強調(diào)句型中被強調(diào)部分帶有定語從句Was it at the air battle on June 8, 1944, which was led by Captain Johnson that Peter lost his life.【典型例題】 ： don’t think possible to master a foreign language without much 分析：本題考查it做形式賓語的句型?！惫蔬x擇D matter if he can’t finish the job on time ? 分析：本題考查it做形式主語的句型：如果他沒能按時完成工作的話，這很要緊嗎？故選擇D ’s mother kept telling him that he should work harder, but didn’t 分析：本題考查it的代詞用法。故選擇D a fact that English is being accepted as an international 分析：本題考查it做形式主語的句型：英語正在作為一種國際性語言被接受是一個事實。that 。which 。句中：“___ was built with stones by his father的定語從句。根據(jù)句意：他正是在他父親用石頭蓋的房子里度過了他的童年。表示據(jù)說，應當說：It is said that??；颍篈s is known to everyone，+陳述句。固定結構應當是：make it clear that+陳述句。This改為：it was in the park where the old couple told me their love ：根據(jù)句意可以知道本句用了強調(diào)句型，強調(diào)地點：in the park 所以按照強調(diào)句型的結構where改為：that we can’t see them, there is air around ：句中的代詞them根據(jù)句意應當指代后面的air，但air是不可數(shù)名詞，因此them改為：it：。翻譯：（1）I didn’t telephone the office until Wednesday.（2）It was not until Wednesday that I telephoned the office.（3）Not until Wednesday did I telephone the ，我們才意識到我們眼睛的重要性?！灸M試題】 ： thinks very polite to be always cutting in when another person is was disappointed with the film, I had expected to be much tore up my photo and upset was with great courage the boy told the truth he had stolen the 。what 。that I try to find that prevents so many people from taking part in the program, it seems to me that there are two main it does it is it does it is is expecting another baby and hopes will be a ：將下列陳述句按劃線的內(nèi)容變?yōu)閺娬{(diào)句。and secondly, in their largely independent domain（領域）of house repairs.“Some husbands, as well as doing much of the heavy work in the home, carrying the coals, and emptying the rubbish, act as assistants to their wives for at least part of the day.” washes up the dishes every night and lays the breakfast for the said that on Sunday mornings he usually hovered（吸塵）around and read plays