问题 What have you done since then? 和 What have you been doing since then?的区别

老师您好~What have you done since then? 有这种用法吗？若有，什么意思呢？What have you been doing since then?又是什么意思？另外，终止性延续动词，能和一段时间连用吗？此处do是否是终止性延续动词？谢谢。

问题 涉及定冠词与不定冠词用法的选择题

—I knocked over my glass. It went over____keyboard.—You shouldn't put drinks near___computer.A. a; the       B.the; the      C.a; a     D.the; a专家老师，您认为此题设置的怎么样？答案应该选哪个？

问题 一般过去时 vs 现在完成时 存疑

It's a good job. Did you do it all by yourself?  干的不错。都是你自己做的吗？请问老师这句为什么不能改为Have you done it all by yourself? 现在完成时：过去完成的动作与现在有着某种联系。夸他“干的不错”不就是他过去的动...

问题 would和should的语义问题

...ough we should expect gratitude, we often find the opposite.4. I'm telling you this so that you should not make a mistake.如何理解句中would和should的语义？还是它们只具有句法功能，没有词汇意义？不过，第4句，给人的感觉具有推测意义。感谢各位老师！

问题 prior在句子中是什么词性

Prior to crossing roads, the school bus goes first.老师，prior to crossing roads. prior 是形容词；如何理解句子成分？

问题 关于as状语从句时态的疑问

As 2021 steadily draws to a close, all of us working on Civilization are taking a moment to celebrate and reflect on an incredible year. 请教老师，这句话的as表示"原因"还是"随着"，表示"随着"是不是主句与从句时态都应为一般现在时？

问题 can you do this for me可以改成can you do me this吗

问题 which和who是否可以充当定语从句的先行词

见过that充当先行词的情况（高中课文里有个句子：That wasn't a real diamond necklace  you borrowed from me.课本注释说，you borrowed from me是定语从句，修饰that)。不知道which和who是否可以充当定语从句的先行词。

问题 关于动词名词化和代词后加数词问题

...adening是表示名词的意思，那这是什么用法呢？2. Check with your partner and see if you two agree.这里的人称代词you后加数词是表示强调吗？two是同位语吗？3. only是是后位限定词吗？

问题 动词ing形式与动词不定式的区别

With ten minutes to go, you'd better hurry.请问老师，红色部分为什么是to do，而不是doing？首先理解With ten minutes to go介宾短语引导的原因状语。介宾短语的一般形式是，介+宾。即With（介） + ten minutes to go（宾语）这里to do前省略了for y...

问题 句子结构分析

one argument that you tend to hear a lot from the pro-tipping crowd seems logical enough: 请问是“one argument is seems logical enough”还是“a lot from ...is seems logical enough”这个句子that引导的定从到底在哪里结束啊？

问题 by+时间点(后面什么时候用一般时态)

By the age of 55 she retired from the famous school.为什么不是had retired?

问题 一道中考题用原级与比较级的疑问

...选。同时，我还看到下列习题：The road is too narrow，and we are going to build a w_____ one.答案给的是 wide 或 wider。

问题 We are meeting at seven, right?这句话为什么用现在进行时

在人教英语7年下册第9单元，有一组对话里面有这样的一句话： We are meeting at seven, right?请问这里是现在进行时表将来吗？为什么用的是现在进行时？

问题 this用作副词修饰过去分词的用法

副词 this 可以修饰形容词或副词。如：It’s about this high. 约摸这样高。Is it this hot every day? 每天都这样热吗? I think it is about this long. 我想它大约就这么长吧。I didn’t think it would be this easy. 我没想到会这样容易。但是，下面这句中...