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问题 They had each his own problem这句话对吗

...）I agree with Reno. It's a simple grammar point that 'they' and 'his' don't match. There is, of course, singular 'they' but the rest of the sentence should match pronouns. （bennymix, 安大略湖一带）这样看来They had each his own problem.这个句子并能...

问题 from which 的用法分析

Many ancient cultures built observatories from which to carry out celestial observations. 许多古代文明都有建造天文台观测天象。from which 在这里当什么词性? 若拿掉这两个字，对句意有影响吗?Thanks a lot.

问题 请问consistent在句子中什么词性

Restaurants are careful about keeping the taste of their dishes consistent. Customers like to know what they're getting when ordering something.请问consistent在句子中什么词性？

问题 无法判断这个that从句是什么从句

The system seems to be working the most efficiently that it has ever worked.请问这个句子中的 that 从句是什么从句？句子是什么意思？

问题 条件状语从句的时态问题

请问条件句的主从句通常可以用什么样的时态呢？比如这一句话：If you had to explain the most simple of procedures, you might feel frustrated. 这句话是条件句吗？ 为什么用了过去式呢？可以用现在时吗？

问题 choose与choose from的用法辨析

Hawaii is surely the first place for you to choose.这个句子是否正确？choose 后面是否应该加 from 呢？

问题 let的用法

...法，let+sb+介词，是省略了什么么？If people are reluctant to let younger people into government then it could affect the ability of future leaders.再就是，then这样用可以么？then是副词，放在一个句子里，不是前后需要加逗号么？谢谢老师。

问题 put...on notice结构

America's Federal Trade Commission (FTC) puts corporate America on notice that regulators will act if firms fail to provide adequate data security. 请问这里的put...on notice中，on notice做什么成分？

问题 it is related……用法疑问

Only a few years ago, it is related, as soon as envoys sat to dine, “stealth boasting” would start. 老师好，it is related在句子里是什么意思？

问题 did sightseeing是什么用法

Kristin Diehl conducted a series of experiments on photo-taking to find out whether people enjoyed it when they did sightseeing.过去式did后面为什么用ing形式（有did doing句型吗）？

问题 which引导的这个从句是什么

You commit to making time for me as a student, which without your guidance, I would not be here today. 想请问下，这个which引导的是什么从句呢

问题 when从句的时态问题

—Can I go to Beijing for my holiday, Dad?—You can when you _______ a bit older.A. will getB. getD. gotC.are getting为什么答案是选B而不是选A（本人初学者，不要太深奥）

问题 that还是in which

一道单选题：The government is to end the system _____ farmers make more money by leaving land unplanted than by growing rice.填 that。是同位语从句还是填 in which 成为定语从句？

问题 将来进行时表推测问题

请问将来进行时表推测时，必须基于present evidence 吗？有没有权威的例句Those clouds look very dark. It will be raining soon.=Those clouds look very dark. It is going to rain soon.

问题 时间状语从句

... the newspaper    B. While I was looking through the newspaperC. To look through the newspaper     D. I was looking through the newspaper.这道题为什么选B呢