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问题 until,before同时使用问题（waited...until...before doing）

Uncle Vernon waited until Piers was safely out of the house before starting on Harry.我理解在这里before部分相当于一个并列句, 等于and then he started on Harry.请问这样理解有没有偏差？

问题 disappear into与burst into的区别

请问一下。Returning home from the lesson, I (           ) into my room, as.usual. But once inside , I felt that deep and burning shame.                A.disappeared   B.burst.问老师答案为什么是A而不是B,A不是消...

问题 如何理解three other cities has...的主谓一致

The population of London is in decline while three other cities has robust population growth.这里的为什么用 has 而不用 have 呢？还是我的书错了？谢谢！

问题 句子成分分析

...文如下：it straddles a major highway that's been an objective for the army as it's pushed slowly up through ldlid province in recent weeks

问题 定语从句和介词词组修饰同一名词的语序问题

Your knowledge can be no stronger than the knowledge you have of ideas in a subject.其中knowledge you have 和（knowledge）of ideas是否作knowledge的两个修饰理解。为什么不能说your knowledge of ideas，是否更顺

问题 关于start是否用被动语语态的问题

Miss Gain said the Red Cross _________ (start) in 1863.我记得start, begin, finish, end等不能用于被动语态，但是这道题给的答案是was started。请问正确答案应该是was started还是started？为什么？谢谢!

问题 take that next step中的that是什么句子成分

A positive response to a new idea from an engineer, a venture capitalist, or just anyone listening, is often enough to motivate someone to take that next step.上文中的 that 是什么词，什么句子成分，去掉可以吗？谢谢回答。 

问题 关于thank sb. for doing sth.的句子成分解析

Thank you for having taken so much trouble to help.和Thank you for taking so much trouble to help.有什么区别，前面那一句是动名词完成式的被动语态？还有上面句子的句子成分解析，特别是to help作什么成分？谢谢!

问题 关于名词性从句引导词的疑问

1.在名词性从句中，引导词what和which的区别2.在名词性从句中，关于（-ever类词）做引导词时如何使用，whomever能否作名词性从句引导词？

问题 并列句还是结果状语从句(涉及and so...)

It was not a valuable book, and so a poor man who could read very little bought it for a few coins.这里的 and so 怎么理解？如果是并列句直接用 and 连接不就好了？ 如果是结果状语从句，直接逗号加so不就可以了？为什么用and so？

问题 live and learn的用法问题

...d trust him, but I couldn’t. —Oh well, you ________. A. live and learn          B. live and let live答案是A。不知道如何理解live and learn。好像有句谚语叫Live and learn，它的意思是“活到老学到老”，但它填入句中意思不通...

问题 如何理解时间名词后接where从句

...英语词典的see词条（第8条释义）：We can see a day where all people live side by side. 我们可以想象有那么一天所有人都和睦地生活在一起。请专家老师解释一下，这里为什么用 where 来引导定语从句，而不用 when？难道时间名词...

问题 关于as much as和as long as

请问老师在这个翻译中: 猫睡觉时间比人长一倍。答案给的是Cats sleep twice as much as people. 这里可以用 twice as long as 吗？long不是也可以表示时间的长短吗？

问题 with dinner与with a dinner

The evening concluded with dinner and speeches. 这个夜晚在宴会和讲话中结束。 请问句子中的with dinner可加个冠词说成with a dinner吗？

问题 ​怎么理解but和nonetheless放在同一个句子里使用

The book is too long but nonetheless informative and entertaining.在这个句子里 nonetheless 是个副词 = despite this fact， 前面的 but 是什么词性？如果 but 是连词，为什么后面不接句子？这里 but  和 nonetheless 都是让步，两个一起用不是重复了吗...