Ⅰ.单项填空

　　1．The weather turned out to be fine yesterday.I ________ the trouble to carry my umbrella with me.

　　A．should have taken B．could have taken

　　C．needn't have taken D．mustn't have taken

　　答案　C

　　解析　needn't have done sth.本没必要做......而做了。

　　2．But for your help，I couldn't ________.

　　A．have succeeded B．be successful

　　C．succeed D．have been success

　　答案　A

　　解析　but for意为"多亏......；要不是......"，用虚拟语气。本句是对过去事情的虚拟，用情态动词＋have done，故选A项。

　　3．I would have come earlier，but I ________ that you were waiting for me.

　　A．didn't know B．hadn't known

　　C．would have known D．haven't known

　　答案　A

　　解析　本题前半句为虚拟语气，后半句是真实情况，由句中were可知用一般过去式。

　　4．If I had worked harder at school，I________in a comfortable office now.

　　A．would sit B．would have sat

　　C．would be sitting D．were sitting

　　答案　C

　　解析　考查混合虚拟语气。从句是与过去事实相反的虚拟，主句是与现在事实相反的虚拟。

　　5．We ________ our lives had it not been for the policeman.

　　A．would have lost B．should lose

　　C．might lose D．had lost

　　答案　A

　　解析　由后面"had it not been for..."可知是对过去事实的虚拟，主句应用would have done，故选A项。

　　6．________ more careful, his ship would not have sunk.

　　A．If the captain were

　　B．Had the captain been

　　C．Should the captain be

　　D．If the captain would have been

答案　B