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问题 join 和 join in 用于参加活动时的区别

用 joined, joined in 填空：Soon some of the teachers ______ the singing.Some of us decided to _____ the strike.Everyone there ______ the conversation. 除写出答案，也请老师分析一下原因。 

问题 'd是等于had 还是 would

...inted and sculpted. He’d been a competitive swimmer and boxer in school, too, and as an adult was a fan of every televised sport, from professional golf to the NHL.”想请问如何判断'd是等于had 还是 would？什么情况下等于had，什么情况下等于would。谢谢！

问题 behind如何理解

CNN新闻一段话：It's about a year behind in my right leg.我的右腿大约有一年的时间恢复了功能。请教老师：这里的behind如何理解？

问题 主句前加then

现在分词作状语，主句前可以加then吗？Using high technology, then we can do it much better.句中then的意思是那么。

问题 为什么love等动词不能用于进行时态

以下这些  be, seem, love, want, agree, see, know, have 不用于进行时态，表示状态的动词好理解，但是 love, want, agree, see, know 这些词是表示状态么？

问题 and连接两个词作主语时谓语用单数还是复数

...Picture of Dorian Gray序言中看到这样一句话：Vice and virtue are to the artist instruments of an art. 想到上面的问题。

问题 No matter when与whatever的如何区分

______ we met with difficulties, he came to help us.A. No matter when       B. UnlessC. Whatever                 D. Although答案：A，但我觉得 C 也可以呀，翻译中文是：无论我们遇到什么困难，他都会帮助我们。请...

问题 主格所有格和宾格所有格怎么理解

...定的，二者都可以解释，试看下举的二例：(a) She has come to sing his praise. 她来赞美他。(b) She doesn’t want his praise. 她不要他赞美。 疑问：这个貌似有点矛盾啊！

问题 same与similar并列时后面搭配什么介词

...bsp;similar meanings as the following? 为什么不用 to 与 similar 一致而用了 as 与 same 一致？盼望专家老师的解惑，十分感谢老师一直以来的指导。另，英语水平很差，尤其是基础，怎么学习？盼望专家老师给予好的建议。

问题 sir，lady与Mr.,Ms.的用法区别

...》时看到这样一个句子：Sir William and Lady Lucas are determined to go, merely on that account, for in general, you know, they visit no newcomers. sir和lady不是要单独使用的吗？为什么这里可以加名字？这里可以呀Mr和Ms吗？sir，lady与Mr.,Ms.的用法有什...

问题 had been expected 还是 had expected

Mr smith _____ to attend the meeting at 10 this morning, but he didn't come.A. was expected     B.had been expected   C.expected       D. had expected答案为B。 D 可以么？说他自己期望来？而实际没有来？好像没什么不可以吧？但又...

问题 这个过去分词是被动谓语的一部分还是过去分词作前置定语

Cygnus will also take 38 CubeSats, which are miniaturized satellites designed for research purposes, to the station for deployment later.satellites后面已经有一个过去分词修饰了，能不能前面还有一个过去分词修饰？

问题 有get sth had done这种形式么

The students _____ busily when Miss Brown went to get a book ____ in the office. D. were writing; had leftD 是资料给的答案，可是我有点怀疑  第二个空 不是应该用 left 么？过去分词作后置定语 ，怎么用了get  sth had done 这种呢 好像没有...

问题 have always been willing怎么改写成had always done结构？

have always been willing to do 总是愿意做某事，改写成had always done结构，要怎样写，难道是have always would吗？

问题 如何理解the windfall of deep-rooted cause

Violence  the windfall of deep-rooted causes that U.S. refuses to address: China Daily Editorial.     请问the windfall of deep-rooted causes怎么理解？