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问题 一道专八改错题，and后面到底是省略了have还是have contributed to呢？

Throughout our history, immigrants have contributed to American society and help build the American dream 请问:可以将help改成helping吗？答案改成helped将其看作与contributed并列。那可以理解成and后面省略了have contributed to，helping…做它的宾语吗？

问题 请问这个句子中的with后面的was是什么用法？如果是独立主格结构，怎么会有was出现？

He saw them with their heads together later that afternoon in the library, together with a weedy-looking boy Hermione whispered was called Theodore Nott.

问题 whether sharing it is more likely to ... 这里it是什么作用

On the other hand, scientists disagree about how much and when they should share data, and they debate whether sharing it is more likely to accelerate science and make it more robust, or to introduce vulnerabilities and problems.whether sharing it is more likely to ... 为什么这里有个it，起...

问题 同位语（从句）的先行词可以使一句话吗

...子：Poor shipping experiences can lead to customer attrition 呢？If the government had known what was going to happen, it would not have increased credit facilities — a move that accelerated inflation.同样的，a move 是同位语没错吧？a move 的先行词是不是就是it would not ha...

问题 be slow to do sth与be slow

曾在书上看过be slow in doing sth，但今天看到一个be slow to do sth的句子，它们之间有什么区别？句子如下： The idea was slow to gain general acceptance.

问题 关系代词which在定语从句中可以作定语吗（前面没有介词时）

...不会吃东西，一旦饿了他几乎什么都吃。She may have missed the train, in which case she won’t arrive for another hour.  她可能没赶上火车，要是那样的话她还要过一个小时才能到。如果前面没有介词呢？which也可用作定语吗？谢谢！

问题 如何正确区分使用instead和however

对于 however/instead 的选择，经常出错。例如：There are many ways to describe people using the word "skin." If someone is thick-skinned they are not easily hurt emotionally. You can criticize them or be unkind to them and it simply rolls off their back...

问题 有五个that的句子分析：I think that that that that that...

...看到这么一句话：I think that that that that that student wrote on the blackboard was wrong.此句是否有误呢？ 倒数第二个关系代词that是否应该用which, 而不是that?好像记得某本语法书上说（忘了是哪本了），当先行词是that的时候，关系代词不能...

问题 not to smile，not to touch视作定语还是状语，如果是状语，是充当什么状语？​

It is considered unfriendly not to smileIt is best not to touch unless you are sure the other person is comfortable with it.这两句里的not to smile，not to touch视作定语还是状语，如果是状语，是充当什么状语？

问题 could not have been sweating在句子里是虚拟语气吗

...ency, he said a "problem" with her account was that a medical condition at the time meant he could not have been sweating, as she claims he was.该句子描述一个被指控猥亵的男性所做的辩护。句子中“could not have been sweating”应该是虚拟语气还是陈述语气？这里...

问题 Moving up or down a level, based on how you lived

Ah, the Buddhists believe you keep coming back..Moving up or down a level, based on how you lived your life.这句话中coming back,和moving up or down a level是不是都是keep的宾语？based的主语是keep的主语you吗？

问题 关于关系代词用作确认性表语和归属性表语的省略问题

...表语，则关系代词要用who（不可省略）。例如：He wasn’t the person who I’d thought he was.他不是我以为是的那个人。（以前误以为他是某个人）我的疑问是：为什么归属性表语可以省略，而确认性表语就不可以省略呢？有相关的权...

问题 diary 可否指一篇日记

...单词，在牛津字典中的解释是a book in which you can write down the experiences you have each day, your private thoughts, etc.那么这个单词指的就应该是那个book，也就是日记本。那么有两个问题：1，如果想表达一篇日记该怎么说呢？比如我今天想写...

问题 Yes和No在答语中的用法疑问（续）

...赞同对方的否定陈述用“No”。如：— He didn't come to the party last night.— No, he had something important to do.（是的，他有重要的事要做。）原问题见：http://ask.yygrammar.com/q-4343.html■但我还有一点不是很理解：在这种结构中，如果是反...

问题 不定式和现在分词的区别(for sb doing与for sb to do)

So the U.S. Surgeon General has suggested that e-cigarettes may be a useful toolfor adults trying (try) to end their tobacco use,or quit.为什么空格部分不能用不定式to try?（空格部分为 trying）