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问题 现在分词一般式与完成式的用法疑问

They hoped he would own up to having told the lie.I think that's what he said, but I can't swear to having heard him correctly.这两句话中的tell和hear为什么要用现在完成时？不能直接就telling, hearing吗？是不是在介词后面的动词只能用现在完成时表示过...

问题 Legend has it that...是什么句式（it是形式宾语吗）

Legend has it that the Dragon Boat Festival originated long, long ago. 传说龙舟节是很久很久以前开始的。请问专家，这是什么句式？如何分析？it是形式宾语吗？

问题 怎么区分while引导的是时间状语从句还是条件状语从句

怎么区分 while 引导的是时间状语从句还是条件状语从句？Some people waste food while others haven’t enough.一些人糟蹋食物而另一些人却食不果腹。We must strike while the iron is hot.我们要趁热打铁。

问题 结构分析：I Just came back last Sunday.

...么结构？介宾？状语？能不能列举所有情况？3.He failed in the exam.是主谓介宾还是主谓状语结构？

问题 for which定语从句成分分析，求解

Aluminum（铝） remained unknown until the 19th century，because nowhere in nature is it found free，owing to its always being combined with other elements，most commonly with oxygen，for which it has a strong affinity.（亲和力）最后一句为什么不直接for it has...变成原因状...

问题 连词和状语从句可以构成插入语吗

Iconoclasts, either because they were born that way or through learning, have found ways to work around the perceptual shortcuts that plague most people.                               阴影部分：是插入语吗？还是状语从句啊？              ...

问题 关于过去分词作定语的与谓语的时间先后问题

老师您好，我有一个疑问，比如：The broken cup is mine.这个broken表被动、完成，是先于谓语is的。但是举个例子，He faced with so many difficulties looks worried，这个faced with so many difficulties是he的定语，那么faced with so many difficulties不是一种...

问题 death toll是数字时后面该不该再用数字加people

The final death toll came to 2,743 people—almost all New Yorkers.这是《经济学人》里的句子。我认为这里有people不太规范，应该去掉。各位大咖专家老师怎么看？多谢！

问题 对划线部分提问以表意为主还是语法为主

...法规律，但是感觉后者才更符合表意。同样的， She likes the black dog?  对定语black划线，应该用Which dog does she like?  但是有些人坚持只要是对颜色提问就用What color，那么就变成了What color dog dose she like?   请哪位大神给个有根据的...

问题 Little 位于句首引起的倒装句如何变成非倒装句

比如下面这个句子：Little did he think the police would be waiting for him. 他没有想到警察会在等他。如果想要它不倒装，little 应该放在句中的什么位置？

问题 关于a good two hours的疑问

It took us a good two hours to finish the work. 请老师分析一下句子中 a good two hours 的用法。为啥将不定冠词用在一个复数短语前呢？

问题 这里的tell后面是不是缺少个介词

...pecial session on China that an increasingly prosperous China will provide the world with more "Chinese opportunities" in development, namely market opportunities, investment opportunities, growth opportunities and cooperation opportunities.他在“中国专场”活动上表示，一个...

问题 Father's Day falls on...句子中fall的用法

老师：您好！Father's Day falls on the third Sunday in June.父亲节是（每年）6月的第三个星期日。我不明白为什么这里要用 fall 这个动词呢？ fall 表示“落下”的意思啊。请老师指导。谢谢!!

问题 education, excitement, agreement, invention的用法比较

下面一题是2015年湖南省对口招生考试的一道题：1. The two cities have reached an ______ to develop science and technology together. A. education      B. excitement     C. agreement      D. invention 答案是C。...

问题 时态疑问I applied…but they won’t…(前后不一致)

I applied to join the club, but they won’t accept me. 请问专家：这句话的时态有问题吗？为什么前面用一般过去时，而后面用一般将来时？