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问题 表示一段时间的介词for在什么情况不能省略

...许多情况下，表示一段时的介词for是可以省略的。如： The meeting lasted (for) three days. 会议持续了3天。 How long are you staying (for)? 你打算呆多久? We’ve been here (for) six weeks. 我们在这里已经呆了6个星期了。 同时书上注明&ldquo...

问题 形容词后面能加宾补吗(是不是宾语后面都能加宾补)

...是merits和shortcomings后面的s得去掉? 原句：In conclusion, the system has both merits and shortcomings.

问题 to do/ to be doing/ doing 作定语时的区别

原句：There will be more than three hundred scientists attending the meeting...原句是还未发生的事情，为什么定语用attending，而不是to attend？  分词做定语相较不定式做定语区别是什么？如果用不定式，to attend 和to be attending 区别是什么？...

问题 时间和条件状语从句中的时态问题

...却偏要用进行体呢？比如：—— I heard that Bob was fired by the company.  —— Yes. But don’t mention this when you are talking to him. 很显然这个从句是想用现在进行时代替将来进行时，我纠结的是为什么是进行体而不是一般体。毕竟从句中找...

问题 非限定定语从句修饰的是整句话还是前面的名词

Now the nation’s top patent court appears completely ready to scale back on business-method patents, which have been controversial ever since they were first authorized 10 years ago. 请问老师，which 这个是非限定定语从句，他修饰的不应该是前面整句话吗？为什么翻译...

问题 主句为一般过去时a soon as从句就不能用现在完成时吗

I decided to go to the library as soon as I _____ what I was doing.A.finishes      B.finishedC.will finish    D.have finished为什么这道题不选现在完成时？

问题 feel sb doing用法疑问

...这样的区别吗？我看到过有语法书有这样的例句：I feel the earth shaking/shake. do与doing 之间用的/符号。

问题 选择题中pay,cover,include,comprise的辨析

... invoice amounting to $ 20,000 ________ the first consignment per S.S. East Wind.A. pays          B. covers        C. includes &nb...

问题 Rather than句首接不定式问题（求曹老师回答）

章振邦高级英语语法书上说:Rather than go by air, I'd take the slowest train. rather than 是“从属连词”从属连词应该引导状语从句，而只接个不定式显然状语从句的成分缺失了。该如何解释？请问是省略的结果吗？以及,Rather than he to go, I'd...

问题 there be 句型中not any的not否定的是be动词吗

There are not any students in the classroom. 这句话中not否定are，any修饰students，对吗？我看到有老师说not和be动词连用不能否定名词。那这种存在句中not也是和be动词连用，所以not是否定be，而不是否定any或者any students？

问题 当主句含有动词do时作表语的动词用不定式还是动名词

All you ever want to do is going shopping with your friends. Don’t you have any other hobbies?请问上面句子中 going shopping 用得对吗？感觉应该用不定式吧？即：All you ever want to do is (to) go shopping with your friends. Don’t you have any other hobbies?

文章 《基于权威语料•现代英语用法大词典》书稿连载(03)-brain

...比如D03到时会改为CDSE（Oxford Collocations Dictionary for Students of English）。●本稿为作者提供的word原稿，未经正式排版和校对，特此说明。●欢迎各位专家老师提出宝贵意见。***************************************************************************...

问题 was是不是缺少表语？

Then everything will be as it was before.感觉这个句子不完整

问题 介词by的用法

It's all to do with what we understand by performance as a public event.请问这里的by是什么意思？什么用法？

问题 语法分析

I was living in so much frustration that that was my escape,to go to school,and get ahead and do better第二个that是作形式主语吗？如果是为什么不用it呢？如果不是做形式主语，那么是什么呢？