[2017年英语四级考试时间]2017年专业英语四级考试词汇语法练习题及答案3
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1. Everyone has a right to enjoy his liberty, and____his life.
A. indeed
B. so
C. much less
D. much more
2.He claims to be an expert in astronomy, but in actual fact he is quite ignorant on the subject. ____he knows about it is out of date and inaccurate.
A. What little
B. So much
C. How much
D. So little
3. I would just as soon you ____the book yesterday.
A. had returned
B. returned
C. would have returned
D. would return
4. She began to be worried lest he____with some accident.
A. had not
B. should have met
C. would meet
D. met
5. “Has he gained weight?”
“He would gain weight, but he____much.”
A. doesn’t eat
B. didn’t eat
C. hadn’t eaten
D. couldn’t eat
答案及解析：
1.【解释】much more等于still more，意为“更不用说”，用于肯定句;much less也就是still less，意思相同，但用于否定句。故答案为D。
2.【解释】考查名词性从句。第二句话中what little he knows about it作整句话的主语，其中what用做little的定语，意思是“所……的一点点”。
3.【解释】would(had) rather, would as soon, would sooner或would prefer所引导的从句中要求使用虚拟语气，另外，对过去事实的虚拟应用过去完成时，所以选A。
4.【解释】在以lest和for fear that引导的状语从句中，谓语动词多用虚拟语气，通常构成是：should +动词原形;本题用should+ have done的形式，表示动作发生在她“担心”这个动作之前并已完成。故答案为B。
5.【解释】but用作连词时，不引导虚拟语气的句子，但可以同前半句是虚拟语气的句子连用。如果前半句是对过去事实的虚拟，but后用一般过去时;如果是对现在事实的虚拟，but后用一般现在时。故答案为A。
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