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问题 let alone（更不用说）后接动词用什么形式

let alone（更不用说）后接动词用什么形式？比如下面一题：The baby can’t even sit up yet, let alone _____ (walk).该填不定式？动名词？过去式？还是……

问题 《would have done形式是虚拟语气还是情态动词推测性用法的讨论》疑问

...，可是现实是没有发生。用may/can/must 为什么是错误的？They are recycling things they would have thrown away in the past.我的疑问3：既然would have thrown away是虚拟语气，那么现实（in the past）他们根本就没有仍东西，那么回收什么？逻辑上说不...

问题 这个by far为什么不与现在完成时连用

She is the best teacher by far. 她是最最好的老师。请问这个句子为什么不用现在完成时? 不是说 by far 习惯上要与现在完成时连用的吗?

问题 求助这一句话的翻译(好像涉及形式主语)

It’s funny how the second you stop doing favors for people they disappear.求助这句twitter上的一句话的翻译。百度翻译看起来怪怪的：有趣的是，你第二次停止对他们消失的人表示支持。其中：how引导的句子做什么成分，it 是形式主语吗，感觉...

问题 参加考试用take与take part in

The children said they wished they didn’t have to ______ exams.A. take    B. take part in   C. join    D. join in答案是 A。为什么不能用 B?

问题 非延续动词的被动语态可以和一段时间的短语连用吗

非延续动词的被动语态可以和一段时间连用吗？如The work has been finished for a month.这句话对吗，谢谢。

问题 become serious about可以看做一个复合谓语么

However ,after  a year so in which they became more serious about their work, the Monkees started to play and sing their own songs like a real band.定从的句子结构可以看成主谓宾么? 把 became serious about 看做谓语。

问题 There needs to be pause.中pause如何理解？

After the consolidation there needs to be pause. 是名词？查了查，发现是可数。 是动词？语法不对呀 还有，这个句子正确的语序是这样吗：Pause needs to be there？

问题 on特殊的用法（出自2019年高考英语天津卷）

I’m talking about people who have stopped learning on growing because they have adopted the fixed attitudes and opinions that all too often come with passing years. 这是 2019天津卷阅读D中的一个句子，请问 on 是什么用法？

问题 starting to appear that automate...的分析与理解

Behavioral synthesis tools are starting to appear that automate the process from about step 2 onwards.请问这里 that 后面的部分不是从句，automate 是动词。这里that后的内容作为什么语法理解呢?

问题 这句话用完成时和过去时有什么区别

The guard rails that will be familiar to anyone who has attempted to cross a road were an engineering solution to pedestrian safety. 句中的has attempted换成attempted有什么影响一直感觉完成时和过去时的区别似懂非懂谢谢解惑

问题 难理解的 with which to do sth

She hasn’t got enough money with which to buy the car. 她没有足够的钱去买车.老师这里为什么用到 with? 定语从句关系代词要在句子里要作成分，但这里的先行词which在句子里做什么成分?

问题 请教表语从句和定语从句，可否这样替换？

...，在整个句子中充当表语成分。如果把句子改写成that is the way that you get someone's attention.那 that you get someone's attention就是一个定语从句，充当名词way的定语。请教老师，我上面对句子的分析有合语法错误。

问题 现在进行时还是过去进行时

Stephen ________ a new model plane the whole morning, but he hasn’t finished it till now. A. is making       B. was making  老师好，请问这道题选现在还是过去进行时更好？我觉得两个都可以，但是我第一感觉是现在进行时，表示从过去做到现在模...

问题 实义动词have可以做助动词

...的眼神背叛了他。”(请曹、黎、刘或王老师回答)译文：The doctor hadn't much belief in his behavior for Sam's eyes betrayed him.问：“对……不太相信”= “ have much belief in……”，这里的have是实义动词,而这里用了hadn't把have当助动词用是不是...