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问题 turn out to be...中的不定式作什么成分

The plan turns out to be a failure. 在这句话中不定式做什么成分?

问题 unless后面能不能跟否定

We won't get there on time,_________ the car doesn't break down.A.even if  B.unless请问这道题能不能选择unless? 答案是A。unless的意思是除非，也就是如果不，套到后面那个句子里，双重否定表肯定，意思就变成了如果车坏了，我们就...

问题 动名词的时间性

...表示“将来做”，那么:1.advise doing sth.2.suggest doing sth.3.Mother didn’t accept the proposal to move [for moving] house.4.I have no intention of changing jobs. 5.He told her of his plan to write [for writing] a novel.名词在这些句中作宾语和介词宾语时很明显是表...

问题 Less widely known are...是什么句式

...了什么句式，或者用了什么省略方法？Less widely known are the shared bony ear structures between fish and humans.我在英文网站上看到的，Less widely known应该不能单独做主语，我想是不是省略了什么或者是固定搭配。想请各位老师赐教。

问题 标点符号(and therefore前面应该用逗号吗)

The quality of teaching can make a huge difference to students’ academic performance. and therefore, parents prefer to choose prestigious schools for children.请问老师，这个句子and therefore前面应该用逗号吗？还是说应该用句号 ，同时And要大写？

问题 句子断句问题(go over all of us)

:The puddle has gone over all of us.这个句子中,go over + all of us 句意不通 ,如果是 go + over all 的话, of us 这里又缺少了一个all或者多了一个of?

问题 as we know it在句子中如何理解

They say one day a meteor will strike the Earth,obliterating life as we know it.老师，as we know it是状语从句吗，分词短语里可以有状语从句这个句子成分吗？ 

问题 一般现在时的真正含义

After the arrests governor Whitmer called out president Donald Trump for stoking distrust and fomenting anger.Trump responded by tweeting he does not tolerate extreme violence, and that governor Whitmer has done a terrible job.特朗普总统在推特上使用了does not, 一般现在时，是否表...

问题 存在句There came...和非存在句There goes...的理解

章振邦的书中说:There came a train.（存在句）There goes the bus.（非存在句）如何理解？

问题 英语句子翻译时的句子结构整合和重组

It estimated that the Chinese would need 1.17 billion square meters of housing for living annually on average from 2019 to 2030. 据估计，从2019年到2030年，中国人平均每年需要11.7亿平方米的生活用房。请问一下这样的翻译算不算是句子结构整合和重组？

问题 for example可否连接两个句子(就像连词一样)

比如：There are several different ways to bind a book, for example you can stitch or stick the pages together. 正确吗？我知道for example前面是句号的时候可以这么用，如果是逗号（如例句）或者分号呢？是否也是正确的？

问题 这里可以填did一般过去时吧

Did you watch the news just now？No, I did not. I ____ (do) my homework.答案横线上是用过去进行时，我想问的是刚刚就一定是过去进行时嘛，不可以填did过去时嘛，毕竟just now就可以修饰过去时啊，所以刚刚也可以表示一般过去时吧？

问题 名词后面跟着的When 是定语从句还是状语从句

请问各位老师，下面这两句话同样是跟在名词后面，怎么判断when 它引导的是定语从句还是时间状语从句呢？1. It was 1949 when the PRC was founded 2.It was three o’clock when we came back home.

问题 as在句中是什么用法

We have all read or heard accounts such as these, not to mention the stories of dishonesty amongst all layers of society as exemplified by consumers who steal and politicians who demand bribes.请问这里的as是连词还是副词呀？有点搞不懂这个as exemplified by...是状语从句...

问题 陈述语气还是虚拟语气（感觉 if 从句要用虚拟语气）

If she hasn’t had the baby already, she’s going to have it any time now. 这个句子的语法对吗？if 从句为什么不用虚拟语气？