2016高考二輪復習英語學案專題七 情態動詞和虛擬語氣
分析：答案選c。后文說“他的外套還在這里”，據此語境可知“他不可能走遠了”，故選can’t
5. he paid for a seat, when he _________ have entered free.
a. could b. would c. must d. need
【解析】a could have done的意思是“本來可以做某事”。句子語境為“雖然他本來能夠免費入場，但他買了票”。
6. —lucy doesn’t mind lending you her dictionary.
—she _________. i’ve already borrowed one.
a. can’t b. mustn’t c. needn’t d. shouldn’t
【解析】c 既然“我已經借了一本”，所以“她就沒有必要借給我了”。needn’t在此表示“不必”。
7.the world wide web is sometimes jokingly called the world wide wait because it _________be very slow.
a. should b. must c. will d. can
【解析】 d在通常情況下，情態動詞 can 表示推測時，只用于否定句和疑問句，不用于肯定句，但有一種特殊情況就是它可以用于肯定句中表理論上的推測或表示“有時”之意，而此題考查的正是can 表示“有時”的用法。
8. zhang lin was addicted to computer games during his last year in high school , otherwise he____________a student of beijing university .
a.would have been b.should be c.has been d.had been
【解析】a otherwise引起虛擬語氣的虛擬語氣屬于含蓄型的，由句意可以得知是與過去的事實相反，主句用 would have done。
9. ---your sister nearly _______ all her spare time to her study during the three years.
----that's right， or she ________ the first place in her school in the college entrance examination.
a. devoted; wouldn't have taken b. spent; wouldn't have taken
c. had devoted; hadn't taken d. had spent; couldn't take
【解析】a devote … to 為固定搭配，因此第一個空應從ac選。or 翻譯成“否則，要不然”，相當于otherwise，引起句子運用虛擬語氣，主句用 would have done。
10.—any information about your son?
—no. if only i ______ those tough words to him.
a.didn't say b.hadn't said
c.shouldn't have said d.couldn't have said
【解析】b if only 引起的句子要用虛擬語氣。與wish跟從句用虛擬的規則一樣。與過去的事實相反，用過去完成時態。