四六级

　　准备参加英语四级考试的同学，一定要对考试中涉及到的语法有深入的了解。下面是小编为大家盘点的各类语法知识与相关练习题，大家快来测试一下自己的语法水平如何吧！

　　状语从句：状语从句指句子用作状语时，起副词作用的句子。它可以修饰谓语、非谓语动词、定语、状语或整个句子。根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。状语从句一般由连词(从属连词)引导，也可以由词组引起。从句位于句首或句中时通常用逗号与主句隔开，位于句尾时可以不用逗号隔开。

　　1. ________ we gave him something to eat, hewould save it up for his little sister.

　　A. Whatever B. However

　　C. Whenever D. Whichever

　　2. Hard-working though he was, ________ there wasnever enough money to pay the bills.

　　A. / B. and

　　C. but D. therefore

　　3. Much hard ________ he tried，he flailed to catch up with the first runner.

　　A. although B. as

　　C. while D. when

　　4. I got in touch with Charles ________ I received his letter.

　　A. when immediately B. soon

　　C. immediately D. suddenly

　　5. We were just ________ calling you up ________ you came in.

　　A. about; when B. on the point of; while

　　C. on the point of; when D. on the point of; as

　　6. Most of his great novels and plays were not published or known to the public ________ histragic (悲剧) death in 1786.

　　A. even before B. ever since

　　C. until after D. until before

　　7. Mr. Saddam Hussein had to go with the American soldiers, ________ .

　　A. no matter he likes or not B. no matter he should like it or not

　　C. no matter whether he likes or not D. no matter he may like it or not

　　8. ________ , I have to put it away and focus (集中)my attention on study this week.

　　A. However the story is amusing B. No matter amusing the story is

　　C. However amusing the story is D. No matter how the story is amusing

　　9. Most animals have little connection with animals of a different kind, ________ they huntthem for food.

　　A. if B. while

　　C. unless D. as

　　10. ________ he thought he was helping us with the work, he was actually in the way.

　　A. Although　 　　 B. Unless

　　C. Because　　 　 D. When

　　11. Babies sleep l6 to l8 hours in every 24 hours, and they sleep less ________ they growolder.

　　A. while B. as

　　C. when D. after

　　12. I have been keeping the portrait ________ I can see it every day, as it always reminds meof my childhood in Paris.

　　A. since B. where

　　C. as D. if

　　13. ________ your composition carefully, some spelling mistakes can be avoided.

　　A. Having checked B. Check

　　C. If you check D. To check

　　14. I would never speak to someone like that ________ they said something unpleasant to me.

　　A. even if B. so that

　　C. as if D. ever since

　　15. -Did you remember to return the book to our English teacher?

　　-Yes. I gave it to him ________ I saw him.

　　A. once B. while

　　C. if D. the moment

　　16. A warning news report from Qatar announces that a group of Islam will continue to kill Americans wherever they are ________ they leave the Arab world forever.

　　A. even though B. in case

　　C. whenever D. until

　　17. —May I go now?

　　— ________ you’ve finished your work, you may go.

　　A. After B. Although

　　C. Now that D. As soon as

　　18. " ________ I live there are plenty of sheep." said the boy ________ pride.

　　A. Where; with B. When; in

　　C. That; in D. Why; with

　　19. He seemed to have been asleep, so I said nothing, but sat ________ he would see me ________ waking.

　　A. whether; when B. that;when

　　C. which;where D. where;when

　　20. It will be five years ________ we meet again.

　　A. since B. until

　　C. before D. when

　　答案与解析：

　　1. A. 因为gave后面已经有表示物的直接宾语了，排除代词A、C、和D。however意为“无论如何”;whenever意为“每当…”，根据句意，只有选C，意义才通。

　　2. A. 因为前面已经连词though了，所以不再需要连词了。Hard-working though he was=Although he was hard-working。

　　3. B. 因为as引导让步状语从句，要求将从句的表语或状语等放到句首。而although, while表示让步时，都用正常语序;另外，though引导的让步状语从句，其表语或状语等可提前也可不提前。

　　4. C. 因为immediately, instantly, directly和the moment, the instant, the minute等都可以用作连词，引导时间状语从句，相当于as soon as。

　　5. C. 因为表示“正要做某事时，突然又发生另一件事”的句型是：was /were just about to do sth. when…did…或was /were just on the point of doing sth. when…did…

　　6. C. 因为not…until…“直到…才…”，再接before语意上不通，要用after。

　　7. C. 因为no matter后一定要接疑问词或whether。

　　8. C. 引导状语从句时no matter how=however，其后接形容词或副词，只有C正确。

　　9. C. unless“除非、如果不”。句意是：大多数动物与其它不同种类的动物都没有什么联系，除非是把它们猎为食物。

　　10. A. 句意是：虽然他认为他在帮我们做工，但事实上他是在挡事。

　　11. B. 表示主、从句的谓语动词同时变化的“随着…”只能用as。

　　12. B. 因为keep the portrait (把照片放在…)后面一定是指所放的“地方”了，所以用where (在…的地方) 引导一个地点状语从句。

　　13. C. 因为非谓语动词的逻辑主语就是句子的主语，mistakes不能check，排除A和D;若用B，则前后是两个句子，又无连词，排除B。

　　14. A. 只有先A，前后意义才通：even if即使、纵然;so that为了、以便;as if. 好象;ever since从(那时)到现在。

　　15. D. 因为the moment可作连词，与as soon as相当。

　　16. D. until (直到…)与肯定句连用，引出的时间是主句谓语动词结束的时间。even though即使;in case以防万一;whenever每当、无论何时。

　　17. C. 因为now that =since“既然”。

　　18. A. 因为with pride (骄傲地) 是固定短语;where (在…的地方) 引导一个地点状语从句，

　　19. D. 由where引导一个地点状语从句，表示坐 (sat) 的地方;后面是带有连词的现在分词作时间状语，when waking=when he woke。

　　20. C. 因为It will be +时间段+ before…是固定句式，意为“过…之后才…”。句意是：要过五年之后，我们才会再次见面。

　　以上就是有关四级考试的重点语法知识，希望大家认真复习。更多四六级备考课程以及冲刺辅导资料请关注四六级考前冲刺备考专题!