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问题 连词while用法

Over his shoulder was thrown a rough brown coat, all torn and full of holes; his thick boots were old and patched; and with one hand he leant on a rough stick, while with the other he held out his battered hat for money.  这句中的 while 是连词吧，“与...同时”的意思吗？

问题 形容词做状语

Unless a certain amount of time is allowed to elapse, it seems in their eyes as if the task being considered were insignificant, not worthy of proper respect. 这句中not worthy of 怎么理解啊？是not being worthy of proper respect这个形式的省略吗？是做状语吗，

问题 potential for 的意思

Suppose you were head of a major soft-drinks company and you want to break into a certain overseas market where the growth potential for your company is likely to be very great indeed. potential for 形容词短语作定语吗 ？

问题 如何理解这个句子的两个 are 结构

Please tell me of what are nettles are, for I cannot think that they are of the least use whatever.请问从语法的角度如何理解这个双 are ？

问题 stuck proved 的用法

As time went by, the plan stuck ________ fairly practical.A. to prove    B. to proved    C. to proving   D. to proves为什么这里是选B，不是选A?为什么要用 proved，不能用 prove？

问题 什么时候用将来完成时

...时呢？Overweight children and teenagers aged between 5 and 18 in the Chinese mainland will reach 48.5m by 2025.所以想知道什么时候用将来完成时。还是说这个句子两种时态都可以。

问题 as和because 的疑惑

One such idea is that fish is the best brain food. Fish is good brain food just as it is good muscle food and skin food and bone food. 这里面的as为什么不可以填because呢？

问题 所有格中的主谓关系和动宾关系

为什么a teacher's praise为主谓关系，而the king's praise为动宾关系？可以反过来吗？

问题 being developed的用法

Even now, there are technologies being developed that can care for crops on a plant-by-plant basis or control the grazing of cattle without physical fences, and by 2040 this technology will be commonplace in farming.请问being是修饰technologies吗？

问题 in under a week

Getting the job finished in under a week was no mean feat.这里的in under a week这里的要把under a week作为整体来看吗加介词in表示一周以内不超过一周的？

问题 long into his second用法疑问

For the rest of his first term, and perhaps long into his second, he will...老师好，long into his second如何理解呢?

问题 can't与couldn't

老师请教您一个问题:—She must be in the dormitory now.—He _______ be there.答案是can't, 请问为什么couldn't不可以呢 谢谢老师！

问题 ​独立主格可以和不定式搭配吗

独立主格可以和不定式搭配吗： South Korea has moved 2/3 of its government agencies away from Seoul, many of them to the newly built Sejong city.

问题 that从句用在逗号后面

There is a big risk that none of this will happen, that the ANC has grown so  rotten  that no one can reform it.老师好，请问这里的that是哪种用法？

问题 关于上涨百分之多少的表达

之前上学学过 上涨或者下跌 需要加介词 by 与to.如 increase by/to 15%.但是最近在读文章的时候发现很多例句并没有加介词这是为什么呢， 例如：In July, the share price has grown 20% year on year.