学习语法首先要学习句子，因为句子是人类语言的核心，通过对句子的分析理解，可以更好的掌握语法。下面是小编整理的英语四级语法之句子的种类和练习（九），希望对你的语法学习有所帮助！
1. Grandpa used to tell us something about the “Cultural Revolution” ___he had time to spare.
A. as soon as B. as C. so that D. whenever
2. Li Fang is very busy,___she’s always helping others with their lessons.
A. but B. although C. so D. for
3. Getting a right job can be difficult ___the students___ prepared to deal with the job interview.
A. if;won’t B. unless;will
C. unless;are D. if;are
4. Everything depends on__they will support you about it.
A. if B. which C. whether D. that
5. She won the first prize in the speech contest and___ surprised us.
A. which B. it C. as D. who
6. The Oscar is one of the film prizes __offered to any Chinese actor or actress so far.
A. which is not B. that have not been
C. that has not D. that has not been
7. He made another wonderful discovery,___ of great importance to science.
A. which I think is B. which I think it is
C. which I think it D. I think is
8. It’s really very dangerous. One more step,___the baby will fall into the well.
A. or B. so C. but D. and
9. She is American,___ she knows little about American history.
A. so B. yet C. and D. therefore
10. Information technology is taught in most schools,___we have entered the information society.
A. so B. while C. still D. for
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