成人英语学位英语考试讲义(三)

　　⑦ It's （about/high）time that …

　　该句型中一般用一般过去时，如8），再如：

　　"You are very selfish.It's high time you ____ that you are not the most important person in the world," Edgar said to his boss angrily.

　　A.realized

　　B.have realized

　　C.realize

　　D.should realized

　　答案：A

　　（四）状语从句中的虚拟语气

　　状语从句中的虚拟语气主要指as if/though从句中的虚拟语气，首先请同学们做一下下面三道题：

　　1）He walked past the pole and soldiers as if they ______.

　　A.didn't exist

　　B.don't exist

　　C.hadn't existed

　　D.were not existing

　　2）He operates the new computer as if he _____ special training in it.

　　A.has received

　　B.had received

　　C.would receive

　　D.received

　　3）They talked in such an uneasy manner as if something terrible ______soon.

　　A.had happened

　　B.happened

　　C.would happen

　　D.has happened

　　「答案」ABC

　　「评析」

　　谓语动词要求使用虚拟语气的状语从句一般是由as if/as though引导。该从句中时态的选择原则是：

　　① 如果从句中谓语动词与主句谓语动词同时进行，用过去进行时；

　　② 如果从句中谓语动词表示与主句谓语动词同时存在的状态，用一般过去时，如1）。

　　1）He walked past the pole and soldiers as if they ______.

　　A.didn't exist

　　B.don't exist

　　C.hadn't existed

　　D.were not existing

　　答案：A

　　③ 如果从句中谓语动词表示先于主句谓语动词的动作或状态，用过去完成时，如2）。

　　2）He operates the new computer as if he _____ special training in it.

　　A.has received

　　B.had received

　　C.would receive

　　D.received

　　答案：B

　　④ 如果从句中谓语动词后于主句谓语动词发生，用would/might + 原形动词。

　　3）They talked in such an uneasy manner as if something terrible ______soon.

　　A.had happened

　　B.happened

　　C.would happen

　　D.has happened

　　答案：C