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问题 介词+引导词用法

Recurring revenue is the portion of the revenue that is going to continue in the future. It provides a growing base of revenue on which management can rely while focusing on ways to grow the business.on which, 为什这里要加介词on？

问题 连接词的选择

Lily ，how to keep ourselves safe from the novel coronavirus? All ____ we can do for the movement is to wear masks, wash hands frequently and exercise regularly. 选项有what that how,答案是that，为什么不能选what？

问题 英语缩略词后面到底加不加点号或句点(即小圆点)

请问一下，英语中的缩略词后面那个点号（或叫句点或小圆点）用与不用有什么规律吗？如：Mr / Mr. Mrs / Mrs.sb / sb.sth / sth.p 85 / p. 85

问题 going on这个词有过去时或完成时吗

Everything was going well with them.going on 这个词只有进行时态吗? 它是否有过去时,完成时这些状态,变形成 went on ; have went on ?另外,going on well 中,on和well都是副词吗?

问题 先行词是something为什么关系代词用which？

英语新概念课本第二册的77课A successful operation里中有这样一句话：They also found something which X-ray did not show: a small wax figure of the god Duamutef. 请问，先行词是something, 为什么定语从句的关系代词不是that, 而是which？

问题 the role of 后面的名词不能加冠词吗

What will happen when Gru takes on the role of father?这是高中英语新教材译林版必修1第2单元的句子(p28)。请问：the role of 后面的名词不能加冠词吗？比如说成：What will happen when Gru takes on the role of the father?

问题 表语从句的引导词

The reason why enterprises in the Chinese mainland dare to put their profits before public health is because of the inaction of the authorities concerned.老师is后面的表语还可以用because of充当吗？because不是引导原因状语从句怎么还能做表语从句？

问题 degrees做先行词的定语从句that为什么省略

as debt-laden students head for degrees they think will maximize their earning potential, many vital courses suffer. 请问这句话degrees做先行词的定语从句，that为什么省略，做宾语了吗？

问题 在一般疑问句中否定词放前面和后面意义一样吗

You are not feeling very well.疑问句：Are you not feeling very well?Aren't you feeling very well？否定词放前面和后面对句意有影响吗？

问题 有连字符的组合词(如two-year-old)是什么词性

...y son's two year old 有什么区别？老师，请问有连字符的组合词（连字符这个杆是不能省略吗）的词组（或短语）一般作什么成分，是不是所有有杆组合的词组（或短语都是有名词或形容词性词特性？除形容词外，还有哪些词性词组...

问题 定语从句中可以做表语的关系词

I still remember the sweet little girl ____ she used to be.这道题填写that,who,whom都可以吗？谢谢指点！

问题 定语从句无先行词的情况

We are now over the 200-day moving average, this is when stubborn shorts get capitulated.这句话中，when引导表语从句？还是前面省略了the time,作定语从句?

问题 定语从句关系词指代问题

I think Tom is the cleverer of the two boys who is the first to solve the problem.老师，请问这里who指代的谁？根据后面的谓语用的is,那说明指代的应该是Tom，那who的前面是不是应该加逗号？

问题 双宾语中的一个宾语作先行词的问题

The gift that he bought for me looks beautiful. 句中的 buy 是一个双宾动词，在上面一句中 buy 有两个宾语 me 和the gift，其中一个变成了定语从句修饰的先行词。请问这里的he bought for me 可以换成 he bought me 吗？

问题 长句中过去分词的理解以及非限定定语从句的先行词分析

So far, the Department of Justice is relying on the All Writs Act, passed in 1789, which gives judges broad discretion in carrying out the law.请问：(1) passed 是什么意思？(2) which 的先行词是？