专四考试第四部分是语法词汇题共有三十道题，同学们平时复习专四语法知识的同时可以做做专四全真模拟练习题。

　　1. It was requested that all of the equipment ____in the agreed time.

　　A. erected B. would be erected  C. be erected D. will be erected 

　　2. The man sitting opposite me smiled dreamily, as if ____ something pleasant in the past.

　　A. to remember B. remembered C. having been remembered D. remembering

　　3. I ____ him the Christmas gift by mail because he came home during the Christmas holidays.

　　A. ought to have sent B. couldn’t have sent C. must have sent D. needn’t have sent

　　4. It turned out that the children were not ____for the accident.

　　A. to blame B. to be blamed C. to be blaming D. to have been blamed

　　5. The desegregation was achieved through a number of struggles,____been mentioned in previous chapters.

　　A. a few of which B. a few of them  C. a few of those D. a few of that

　　答案解析：

　　1. C) 【句意】所有设备要求在商定的时间内安装完毕。

　　【难点】request后面的宾语从句要求使用虚拟语气，即(should)+动词原形，本句用的是被动语态。

　　2. A) 【句意】坐在我对面的那个人梦幻般地笑着，好像回想起过去发生的某件高兴的事。

　　【难点】“as if +不定式”是一个常见的结构，意为“好像”。

　　3. D) 【句意】我本不必把圣诞礼物给他邮去，因为他圣诞节期间回家了。

　　【难点】主句用了一句与过去事实相反的表示必要性的虚拟语气，符合题意。

　　4. A) 【句意】结果证明是，这起事故不怪孩子。

　　【难点】be to blame 是一个习惯搭配，意为“该受责备”。

　　5. A) 【句意】经过若干次斗争，种族隔离被取消了，其中的几次斗争在前几章里已经提到。

　　【难点】这里考的是非限制性定语从句，关系代词which前加修饰语。