[例1]If there were no subjunctive，English______much easier.
A.will be B.would have been C.could have been D.would be
【解析】答案D。觀察題幹，可知全句表達的是與現在事實相反的虛擬語氣。
[例2]—Alice，why didn’t you come yesterday？
—I______，but I had an unexpected visitor.
A.had B.would C.was going to D.did
【解析】答案C。此題A、D明顯不合上下文，因為乙方沒有去。B選項若為would have則成立，可以理解為I would have come if I hadn’t had an unexpected visitor.的簡略式。但此處是would，故應排除。隻有was going to可得體地表達“我原本打算去的，但是有不速之客造訪”這一意思。
[例3]The guard at the gate insisted that everybody______the rules.
A.obeys B.obey C.will obey D.would obey
【解析】答案B。根據insist表示“堅持要求”時，其後的賓語從句謂語要用（should）do形式。
[例4]I wish I______you yesterday.
A.seen B.did see C.had seen D.were to see
【解析】答案C。此題表示與過去事實相反的願望。
[例5]— If he______，he______that food.
— Luckily he was sent to the hospital immediately.
A.was warned；would not take
B.had been warned；would not have taken
C.would be warned；had not taken
D.would have been warned；had not taken
【解析】答案B。從對話看，是表達與過去事實相反的虛擬語氣。
[例6]Without electricity human life______quite different today.
A.is B.will be C.would have been D.would be
【解析】答案D。without引出一個含蓄條件句，主句表述的是與現在事實相反的虛擬語氣。
[例7]When a pencil is partly in a glass of water，it looks as if it______.
A.breaks B.has broken C.were broken D.had been broken
【解析】答案C。放入水中的鉛筆看上去是斷的，但實際上並非如此，因此是與現在的事實相反，這時as if從句謂語要用一般過去時。