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问题 only为什么放在句末

The promotional pack will be on sale for a limited period only.这句的 only 为什么放在句末? only 有这样的用法吗?

问题 有关it的用法问题

In a video posted to Facebook featuring,the bear it appear to be in relatively good health and was moving quickly. 请问bear后面为什么还要加it？这样主语不就重复了吗？

问题 to be doing 能做宾补吗

填空造句：With his son _____, the dad felt unhappy.

问题 这里的given是什么意思和用法

Please write the details given about each subtopic.这里的given是什么意思和用法？这句话什么意思呀？

问题 that引导什么从句

They teach mental-health professionals how to build enough trust with the mentally ill people person that he will follow advice even if he will not admit to being sick. 请问老师that在这里引导什么从句？

问题 介词短语by boat作主语

By boat is the only way to get here, which is how we arrived.不是说介词短语不能作主语吗？这句是怎么回事？

问题 形容词后置的问题

She had a libel action against the magazine pending.她对该杂志提起的诽谤诉讼尚未判决。请问专家，这个pending作为形容词不是应该形容action的么，那么应该在action之前或者之后都行，为什么会在magazine后边呢？

问题 关于be done 作谓语

The report urged that all children be taught to swim.这份报告呼吁给所有的儿童教授游泳。请问老师，这里的be taught 为什么不是 were taught?是省略了should 吗？

问题 at 用法疑问

A toll-free number for tourists already in the U.S. or Canada is also available at 1-800-CALL-NYS.译文：而人已经在美国或加拿大的游客则可打免付费电话，号码是1-880-CALL-NYS。此处at是什么意思，是如何使用的？

问题 must表推测

做题时遇到一句话：He must have seen the film last week, ___ ___?让写反义疑问句。我的问题是1 现在完成时为什么和last week这种表过去的时间状语连用呢? 2 这道题答案是didn't he，我觉得应该是haven't he

问题 请教下learn about 的意思

I like the class very much we learn about different plants and animals.   请教下  learn about  表示学习时 和 learn的区别呢 ？

问题 longer than necessary的分析与翻译

The cleanup has taken longer than necessary.请问这句话怎么分析和翻译？

问题 文章开头do so含义

When I left for college, I did so with the conviction that my "real" friends were my high school friends.请问，句中did so指代什么？

问题 TOEFL diploma 是什么意思

The minimum requirement for such a job is a TOEFL diploma.请问这里的 TOEFL diploma 是什么意思？托福证书？托福毕业证？托福考试证？托福成绩单？…… 

问题 being racist…成分的分析

The group has also weathered accusations that it reinforces self-hating stereotypes or being racist toward white people. 这里的being是和reinforce连起来看吗，reinforce doing?