2010年12月英語(yǔ)四六級(jí)考試詞匯備考筆記(15)

　　含有下面三個(gè)表達(dá)方式的句子體現(xiàn)虛擬語(yǔ)氣的形式是固定的：

　　lest(以免，防備), for fear that(惟恐), on condition that(在..條件下)

　　它們后面句子的謂語(yǔ)動(dòng)詞的形式都是：(should)+ 動(dòng)詞原形。

　　7 it is time 是...的時(shí)候了。

　　這個(gè)結(jié)構(gòu)有以下兩種變形形式，所用虛擬語(yǔ)氣形式都一樣：it is high time / it is about time.

　　這三個(gè)結(jié)構(gòu)后面加的句子謂語(yǔ)動(dòng)詞都用一般過(guò)去時(shí)來(lái)體現(xiàn)虛擬語(yǔ)氣。

　　8 注意以下兩種情況下should + 動(dòng)詞原形中should不能省略。

　　這里should表示一種語(yǔ)氣，經(jīng)常被翻譯成“竟然”。

　　a. 四個(gè)動(dòng)詞：think, believe, expect, suspect.

　　它們的否定或者疑問(wèn)形式后面加句子，句子謂語(yǔ)動(dòng)詞用：should + 動(dòng)詞原形，should不能省略。

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

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

　　以上三個(gè)結(jié)構(gòu)后面加的句子謂語(yǔ)動(dòng)詞用：should + 動(dòng)詞原形，should不能省略。

　　錯(cuò)綜時(shí)態(tài)的虛擬語(yǔ)氣

　　錯(cuò)綜時(shí)態(tài)的虛擬語(yǔ)氣即指主句和從句在表達(dá)是與什么時(shí)態(tài)的事實(shí)相反上并不一致(比如主句要表達(dá)與現(xiàn)在事實(shí)相反而從句要表達(dá)與過(guò)去事實(shí)相反)，這種情況要采用“對(duì)號(hào)入座”的方法來(lái)處理，即主從句結(jié)構(gòu)分別采用與其表達(dá)時(shí)態(tài)對(duì)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(yǔ)動(dòng)詞的形式都是：(should)+ 動(dòng)詞原形]

　　A would interfere with B had interfered with

　　C interfered with D should interfere with