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问题 when, as, while, since的区别

_____ Tom waited for the exam result, he became less and less patient.  A. When    B. As      C. While   D. Since 答案为 B。请解释一下 when 与 as 的区别，谢谢！

问题 of which 怎么理解？

The journey around the world took the old sailor nine months, ____ the sailing time was 226 days. A. of which   B. during which   C. from which  D. for whichNine months是先行词，the sailing time of nine months was 226 days. 9个月的时间应该270天啊？ 

问题 nothing but,anything but,all but,everything but的区别

Alone in deserted house, he was so busy with his research work that he felt ______ lonely.A.nothing but      B.anything but      C.all but        D.everything but请问如何填啊？谢谢！

问题 what的作用

语法填空，主要是原因，句子分析以及what的作用:You can't imagine what difficulty the freshmen had ____ (consult) the French dictionary.

问题 it is和there be句型的区分

We all think that _____ no need to make laws to prevent the young from getting married during their college life.A. it is B. there has C. it has D. there is这一题答案是D，但是A是否也可以呢？(it可以作为后面不定式的形式主语，这样也说的通)   请老师解答。

问题 the former 用作主语时谓语动词用单数还是复数

He came with his friends and his mother—the former ______ fashionably dressed. A. was           B. were 请问是该用单数还是用复数？从形式上看应该是单数，但由于这个 the former 是指代 his friends 的，应该...

问题 until状语从句前面的主句为何用现在进行时(为何不用主将从现)

I do not really work here. I ______ until the new secretary arrives.A. am just helping outB. will just help outuntil 引导的时间状语从句不应该是主将从现么？不应该是 B 么？但答案为什么是 A？主句为什么为现在进行时而不用一般将来时？

问题 一般过去时、现在完成时、现在完成进行时、进行时等的用法疑问

...用混乱，摸不清头脑，希望老师指点迷津，感谢！例：I ___(not have) a raise in three years.我填的是haven’t been having 我理解的是持续三年没有加薪，答案是haven’t had 还有一个题目A：Can I see your license and registration please? B: What’...

问题 关于比较级句子中than后面应该跟什么

题目：The indoor swimming pool seems to be a great deal more luxurious than ______.A. is necessary       B. being necessary          C. to be necessary           D. it is necessary答案选A。解释：than在句子中作连词，既连接主句和分句，又充当从句...

问题 这里应该选将来完成时还是将来进行时

—Could you give these books to Mr.Mackintosh？—Certainly._____ him aout something else in any case, so it won`t be any bother.A. I’ll have seenB. I seeC. I can seeD. I’ll be seeing空里应该选将来完成时（A）还是选将来进行时（D）？还有，该怎样翻译呢？

问题 advantage和value的困惑

The trouble is that there are not many students who really know how to make use of their time to its best ____.A. benefit      B. value       C. advantage ...

问题 hit与strike在表示自然灾害袭击某地时有何区别

Two yeas ago, a terrible tsunami _____ most of the India Ocean area and parts of the Pacific Ocean.A.hit B. strike  答案为 hit，如果把 strike 改为过去式 struck，答案可以选 strike 么？hit 与strike在表示自然灾害袭击某地时有何区别？谢谢！

问题 none at all与not at all的用法区别

—Do you drink much coffee as before？—No，______at all. My sleeping problem is getting worse. A.none             B.little           C.nothing        D.anyting 请问这里选哪一个呢？答案选 A，但这...

问题 选择题中用现在完成时还是过去完成时的疑问

You will never guess who I met yesterday. My old teacher! We ______ for 20 years.是用 have not  met 还是 had not met? 我认为是后者，意思是“你不会猜到我昨天见到谁，我的老师！我们用20年没见了（到昨天为止）”。但答案给的是前者。我想 We ha...

问题 I haven't been quite ready. 这句话表达方式对吗？

---I'm afraid I ______ quite ready.---Never mind.请问老师这里是否可以用完成时？ I'm afraid I haven't been quite ready. 这种表达方式正确吗？ 我总感觉应该是I'm afraid I am not quite ready.