a. 四個動詞：think, believe, expect, suspect.

　　它們的否定或者疑問形式后面加句子，句子謂語動詞用：should + 動詞原形，should不能省略。

　　I don't believe that he should be cheated. 我不相信他也會被騙。

　　b. it is a pity, it is a shame 真遺憾，it is strange 真怪

　　以上三個結(jié)構(gòu)后面加的句子謂語動詞用：should + 動詞原形，should不能省略。

　　錯綜時態(tài)的虛擬語氣

　　錯綜時態(tài)的虛擬語氣即指主句和從句在表達是與什么時態(tài)的事實相反上并不一致(比如主句要表達與現(xiàn)在事實相反而從句要表達與過去事實相反)，這種情況要采用“對號入座”的方法來處理，即主從句結(jié)構(gòu)分別采用與其表達時態(tài)對應(yīng)的結(jié)構(gòu)。

　　60. If I hadn’t stood under the ladder to catch you when you fell, you _A_ now.

　　A wouldn't be smiling B couldn't have smiled C won't smile D didn't smile

　　2. If you had studied the problem carefully yesterday, _C_.

　　A you won’t find any difficulty now B you would not have found any difficulty now

　　C you would not find any difficulty now D you have not found any difficulty now

　　3. He would be studying at the university now if he _C_ the entrance examination.

　　A passed B have passed C had passed D should have passed

　　16. It is a shame that he _B_ that poor little girl!

　　A deceived B should deceive C deceive D deceiving

　　18. Mrs. bliss kept the door and the windows shut lest the noise outside _D_ her son's sleep. [lest(以免，防備) 后面句子的謂語動詞的形式都是：(should)+ 動詞原形]

　　A would interfere with B had interfered with

　　C interfered with D should interfere with

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　　21. The fifth generation computers, with artificial intelligence, _C_ and perfected now.

　　A) developed B have developed C are being developed D will have been developed

　　22. This ticket _C_ you to a free meal in our new restaurant.

　　A gives B grants C entitles D credits

　　A,B兩項都要加雙賓語，結(jié)構(gòu)為：gives / grants sb. sth.

　　entitle sb. to sth. 使某人有權(quán)得到某物; credit A to B 相信A是由B造成的。

　　相信飛機失事是由飛行員錯誤造成的。 Credit the crash to the pilot's mistake.

　　crash 墜落，墜毀(專指飛機失事); collision 碰撞(強調(diào)兩個物體碰撞，如火車、汽車等)。

　　we are sorry, very sorry, terribly sorry, awfully sorry.

　　23. You _D_ her in her office last Friday; she's been out of town for two weeks.

　　A needn't have seen B must have seen

　　C might have seen D can't have seen

　　24. That was so serious a matter that I had no choice but _D_ the police.

　　A called in B calling in C call in D to call in

　　have no choice but to do sth. 別無選擇，只能做...

　　25. She was so _B_ in her job that she didn't hear anybody knocking at the door.

　　A attracted B absorbed C drawn D concentrated

　　be attracted by 被…所吸引; be absorbed in 全神貫注(專注)于做…

　　be drawn in 被誘騙(誘使)做... ; concentrate on 專注于。

　　I was simply drawn in. 我是被誘騙上鉤的。

　　27. At first, the speaker was referring to the problem of pollution in the country, but halfway in her speech, she suddenly _B_ to another subject.

　　A committed B switched C favoured D transmitted

　　switch to another subject 轉(zhuǎn)換話題; switch to another channel 轉(zhuǎn)換頻道。

　　28. It is politely requested by the hotel management that radios _C_ after 11 o'clock at night. [虛擬語氣]

　　A were not played B not to play C not be played D did not play