专四考试中，有语言知识一项，一共有20题，其实就是词汇语法题啦。而且不止是语言知识，完形填空也必须用到语法。语法看似简单，而且都是选择题，但是也是失分点，为了让大家保证在这项上不失冤枉分，小编为大家带来专四语法每日一练，专四语法不是一蹴而就，每天都要看一点做一点，才能熟能生巧。

　　1. All of the plants now farmed on a large scale were developed from plants ____wild.

　　A. that once grow B. once they grow? C. they once grew D. once grew

　　2. By the time you graduate, we____in Australia for one year.

　　A. will be staying B. will have stayed ? C. would have stayed D. have stayed

　　3. He appreciated____the chance to deliver his thesis in the annual symposium on Comparative Literature.

　　A. having given B. to have been given?C. to have given D. having been given

　　4. The government official can hardly find sufficient grounds ____his arguments in favor of the revision of the tax law.

　　A. on which to base B. which to be based on C. to base on which D. on which to be based

　　5. Living in the desert involves a lot of problems, ?____? water shortage is the worst. A. not to mention B. of which? C. let alone D. for what

　　6. Hydrogen is one of the most important element in the universe ____it provides the building blocks from which the other elements are produced.

　　A.so that B. but that C. provided that D. in that

　　7. Just as relaxation is an important part of our lives,____stress.

　　A.so is B. as it is C. and so is D. the same is

　　8. Victor took a bus and headed for home, ____if his wife would have him back.

　　A. not to know B. not known ? C. not knowing D. not having known

　　9. We can make an exception ____.

　　A. in any case of John B. in case of John ?C. in case of John’s D. in the case of John

　　10. When the Cultural Revolution was launched in China, his father ___ college.

　　A. attended B. had been attending? C. was attending D. has been attending

　　11. My cat is a fussy eater, but my dog is so ____that she’ll swallow down anything that is put in front of her.

　　A. indiscriminate B. choosy ? C. indefinite D. picky

　　12. “This house is more ____than the federal government!” Mac complained to his parents. “You have rules for everything.”

　　A. systematic B. democratic C. bureaucratic D. public

　　13. The American people’s ____of being polite is different from that held here in China.

　　A. mind B. concept? C. consideration D. thought

　　14. Well, that is probably all I can say about sports. Next time I’ll take up the topic of some other ____activities.

　　A. refreshment B. entertainment ? C. pleasure D. leisure

　　15. Where there is an earthquake, energy is ____in one area along a crack in the earth crust.

　　A. repelled B. released C. run D. rushed

　　16. The old gardener used to keep all his tools and do it yourself equipment in a ____in the garden.

　　A. barn B. room C. hut D. shed

　　17. I’ve got a big coffee____on the front of my dress.

　　A. pore B. patch C. stain D. grease

　　18. She broke her leg, but the ____healed quickly.

　　A. fracture B. injury C. skeleton D. cavity

　　19. You’d better add them up. I’m not good at ____.

　　A. figures B. characters C. summaries D. counters

　　20. The girl chose some very pretty ____paper for the present.

　　A. covering B. wrapping C. packing D.collecting

　　21. The two scholars worked at the task of writing a preface to the new dictionary for three hours ?____last night.

　　A. at length B. in full C. on end D. in time

　　22. I can’t read the marks and notes Jim made in the margin. They are too____.

　　A.faint B. foggy C. transparent D. misty

　　23. A highly organized system of irrigation is ____Chinese agriculture.

　　A. typical of B. consistent with? C. famous for D. subject to

　　24. Jack is very ____about wines.

　　A. aware B. knowledgeable ? C. learned D. informed

　　25. As for Ann, I am not sure about her ____in Italian.

　　A. fluency B. clarity C. coherence D. excellency