四六级考试是一项考察基础语法和短语知识比较多的题型,语法是学习英语的基础,是构建语言系统的框架,考生复习时就更应该提前掌握这些基本知识,来练习一下 四六级考试网整理的四六级真题吧,从真题中掌握语法。

  1.They decided to chase the cow away_____ it did more damage.(90.1/44)

  A. unless B. until C. before D. although

  2. _____ we have finished the course, we shall start doing more revision work.(90.1/62)

  A. For now B. Now that C. Ever since D. By now

  3. _____ the punishment was unjust, Helen accepted it without complaint.(90.6/70)

  A. However B. So long as C. Since D. Even though

  4. No sooner had we reached the top of the hill_____ we all sat down to rest.(91.6/62)

  A. when B. then C. than D. until

  5. _____ you decide to take up, you should try to make it a success.(92.1/42)

  A. Whatever B. Unless

  C. Whenever D. If only

  6. Most parents encourage their children to take an active part in social events, _____ those events do not interfere with their studies.(92.1/48)

  A. lest B. though C. unless D. provided

  7._____ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.(92.6/60)

  A. As long as B. Ever since C. So that D. Now that

  8. A man escaped from the prison last night. It was a long time_____ the guards discovered what had happened.(93.6/50)

  A. before B. until C. since D. when

  9. Government cannot operate effectively_____ it is free from such interference.(94.1/53)

  A. so long as B. so that C. unless D. because

  10. I’ll accept any job_____ I don’t have to get up early.(94.1/60)

  A. lest B. as long as C. in case D. though

  11._____ you decide to take up, you should try to make it a success.(94.6/62)

  A. If only B. Unless C. Whatever D. Whenever

  12.Certain programs work better for some_____ for others.(95.1/50)

  A. and B. than C. as D. but

  13.Scientists say it may be five or ten years_____ it is possible to test this medicine on human patients.(95.6/54)

  A. since B. before C. after D. when

  14.Doing your homework is a sure way to improve your test scores, and this is especially true_____ it comes to classroom tests.(96.1/36)

  A. when B. since C. before D. after

  15.Careful surveys have indicated that as many as 50 percent of patients do not take drugs_____ directed.(96.1/37)

  A. like B. so C. which D. as

  16.I felt somewhat disappointed and was about to leave, _____ something occurred which attracted my attention.(96.1/45)

  A. unless B. until C. when D. while

  17.I have kept that portrait_____ I can see it every day, as it always reminds me of my university days in London.(96.1/49)

  A. which B. where C. whether D. when

  18.I’ve already told you that I’m going to buy it, _____.(96.6/46)

  A. however much it costs B. however does it cost much

  C. how much does it cost D. no matter how it costs

  19.You see the lightning_____ it happens, but you hear the thunder later.(97.1/38)

  A. the instant B. for an instant C. on the instant D. in an instant

  20. _____ that my head had cleared, my brain was also beginning to work much better.(97.6/57)

  A. For B. Now C. Since D. Despite

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