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问题 that在句中是什么语法成分

A force that strong had tremendous effects on the area around the volcano. 问题：请问that strong是什么语法成分？定语从句还是插入语？

问题 情态动词must

1， You（ must have been/ Must be） a good student when you were at school. 2， Last night I saw a boy wandering on the street.  He must （have been /be）lost, I thought to myself.请问这两据分别选哪一个？如果不一样的话，为什么不一样？

问题 scheduled看作被动还是形容词

 It is scheduled to premiere on September 8, 2018 and will be the series final.这里的scheduled看作被动还是形容词, 那它后面的to premiere是it的主语吗?

问题 with复合结构

 In addition, as can be seen with the trend of many department stores in the UK to take on older people, they are seen to be more reliable and respectful.请问这个with 结构 和前面see有什么关系吗？ 能不能把with复合结构放在as从句之前呢？ 好像经常见到这种结...

问题 如何理解这里的up用法

his eyes fell on a small crab that stood before him with its claws up as if it were listening to what he said.这里的its claws是名词，后面的up怎么理解？

问题 省略句与非谓语动词

例句: She kept the radio on when (she was)doing homework.在这个例句中，省略了从句中的主语和be动词，但是在省略后的句子中，doing这个词可以看成是非谓语动词吗？

问题 most做副词还是形容词

I was driving behind the Milford Corners bus as I did most snowy mornings on my way to school.most在这是表示副词修饰did？还是做形容词修饰morning？

问题 是否是独立主格结构的判断

Such a shift would transfer rural China，where almost half a billion pigs are produced each year, about 40% of them on small farm with fewer than 30 sows.这里about 后面是独立主格结构吗？

问题 be 可以代替 am, is, are 吗

The right track you be on...为什么不用are呢，这是一种用法吗?

问题 to 应该怎么翻译

The company provoked justified outrage in Vermont last week when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations.这句话为什么不能翻译成这家公司宣布要背弃长期的承诺去遵守严格的核能法规，这在佛蒙特州激起...

问题 同一句中两个who引导的从句

Who do we know on the inside who can help us?请问这个句子是什么意思？这两个 who 是怎么回事？

问题 关于一个句子成分

It is essential that you be on time to work tomorrow.各位老师好，我在一节网课上看到这个句子，网课中说用到命令（commands/requests）的语气时可能会涉及到这部分知识请问这个句子是对的吗？为什么用be呢？我对这种语法现象一无所知。烦...

问题 不可数名词用零冠词表示泛指的疑问

There is blood on your shirt.这里的blood是泛指吗？还是说省略了some？

问题 语法分析

 I’ll call on some of my old friends while I ______________________（待在上海）.问：本题的答案是："am staying in Shanghai."  为什么不是“stay in Shanghai.”时间状语从句不是即可以用一般现在时表将来也可以用现在进行时表将来吗...

问题 kind of 理解问题

There needs to be kind of this transformation of environmentalism from being the token democrat issue to being an issue that both sides have a stake at the table on.这里的kind of是副词修饰词，还是表示“种类”的意思？