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问题 主句是一般过去时before从句可用过去完成时吗

He left the station before I had hurried there. 这个句子主句的动作发生在先，为什么从句用过去完成时？ 换句话说，如何理解主句是一般过去时而before从句是过去完成时？  

问题 As much as has been achieved 用法疑问

As much as has been achieved in connection with globalization, there are much more to be done.这里的as much as看似用作即是，但他是不是缺了主语？

问题 what happened that eliminated 中的that的用法

We do not know exactly what happened that eliminated so many species in a relatively short period of time, but there are several possible explanations. 托福写作中句子，还请老师指点，谢谢！

问题 动名词和现在分词鉴别的问题

There are many "forced riders", who are suffering from the climate _______ having impacts scarcely contributed to the problem.A.though B.despite为什么答案是though，把having done看做是分词，我可不可以看成动名词，选despite是不是动名词having done的使用场景太少了...

问题 祈使句的动词原形前加do的用法疑问

语法书上说“在祈使句的动词原形前加上do是为了强调请求”，但下面这样的句子理解为强调有点奇怪，难道是请求对方再吃一些吗？这不礼貌吧！ Do have a second helping—there’s heaps more. 再吃一些吧——东西多着呢。

问题 would have caught 究竟是虚拟语气还是表猜测可能性？

The people that are participating are negative either on Thursday or on Friday.Even if they would have caught a corona infection last night, they would be not - be infectious today.对于：Even if they would have caught a corona infection last night, 其中would have caught: 这是表示站在...

问题 round out 如何理解（2022新全国卷Ⅰ中的句子）

...food waste goes against the moral grain,” as Elizabeth Royte writes in this month’s cover story. It’s jaw-dropping how much perfectly good food is thrown away—from “ugly” (but quite eatable) vegetables rejected by grocers to large amounts of uneaten dishes thrown into restaurant garbage ...

问题 invite sb for a party与invite sb to a party

The reason I’m phoning you is to invite you ______ a party.A. to    B. for答案是 to，但为什么不能是 for 呢？下面这样的句子不是用的是 for 吗？Why don’t you invite him round for dinner? 你为什么不邀请他来家里吃晚饭呢?

问题 for sb to do sth与介词后接带主语的动名词复合结构一样吗

It is important for us to learn English.for I learning English与上文中的红色部分有什么不同，红色部分与介词后带逻辑主语的动名词复合结构有什么不同，简单介绍一下，谢谢回答。 

问题 the fact引出的从句中一般现在时是否可用现在完成时替代？

...but for the fact that the economy ______ by the current global financial crisis.A. had been affected        B. were affectedC. should be affected        D. is affected这道题目答案是D。我想知道跳出选项来...

问题 where 和 when百思不得其解的一个搭配问题

曹老师请教：The biggest surprise for Josie was when she was chosen as team captain.This cupboard is where she keeps all her sewing things两句均来自于麦克米伦正规字典，所以句子绝对没问题。这两句句子 想了一个 晚上， 首先我很知道  第...

问题 名词性短语The first human moon landing

老师，我在VOA Special English中看到这么一句话：【The first human moon landing happened more than 50 years ago. 人类在50多年前首次登陆月球。】我的疑问是：为什么这篇文章要把这么长的动名词短语【The first human moon landing】放在句首作为主...

问题 the lady's address与the address of the lady

What is ______ordered the English book?A the lady's address in Beijing whoB the lady's address in Beijing whichC the address of the lady in Beijing whoD the address of the lady in Beijing whichthe address of the lady in Beijing 和the lady's address in Beijing 哪个是正确的为什么会这样说...

问题 名词短语可以做限制性短语从句或状语从句吗

...句？另外以下句子：3,205 meters above(the) sea level, Qinghai lake is located about 100 kilometers west of Xining, capital of Qinghai province in western china.（青海湖青海湖位于海拔3205米、青海省省会西宁以西约100公里处。）3,205 meters above(the) sea level在这...

问题 考查状语从句引导词的一道单选题

—I am going to Hangzhou for a holiday this weekend. —_______ you are there, can you buy me some green tea? A. Because   B. If   C. While  D. After 就该题的各备选项，请专家老师给予讲解。学生选择了C。谢谢你们。