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问题 将来时间表示法选择

We can't go for a picnic. It  ______ this afternoon.A. rains     B. is going to     C.  is raining      D. is to rain选哪个或那几个，为什么？

问题 明显不是事实为什么不用虚拟语气

看到这样一个句子：The stuffed dog barks as if it is a real one.这只玩具狗叫起来就像它是一条真狗。疑问：这明显不是事实啊，怎么不用虚拟语气呢？

问题 pop用法（及物还是不及物）

Others have seen the pop they got at their ipo swiftly dissipate. When Lyft went public its share price popped 8.7% on the first day of trading. 请问老师，popped 及物还是不及物？在这里指什么意思？ 

问题 ​look+ adj/adv

...ly。为什么不是sad？ 我理解的是：就像 i look bad / good.it looks beautiful.等，一样，如果是sadly不就成了 ”悲伤地看“而不是“看起来很悲伤”了吗？

问题 一道时态填空题的分析与讨论

Its existence _____ (document) at least as early as the publication of the Classic of Poetry or Shijing. 填什么时态呢？大家讨论一下。要真正理解的。

问题 ​虚拟语气问题以及虚拟语气主句时态问题

虚拟语气问题以及虚拟语气主句时态问题It would have been better to let one director have this way.这是不是一句虚拟语气的句子？如何理解混合时态虚拟语气，尤其是主句时态？

问题 从句疑问分析

A Martian came across the fields about midday, laying the stuff with a jet of superheated steam that hissed against the walls.如何理解这里的that hissed against the walls是同位语还是定语从句？the country northward was as though a black snowstorm had passed over i...

问题 小品词的用法

...词I put on. 中的on是小品词吗？小品词只能跟及物动词吗？It ends up doing sth中的doing sth可以看作状语从而可以去掉吗？还是看做ends的宾语一定不能去掉呢? 这里的up是小品词吗？是副词都是小品词吗？

问题 副词和动名词

1. It was a big step forward for us to have all of our documents in one place. 请问老师为什么forward这个副词可以修饰前面的step呢？副词为什么可以修饰名词呢？ 2. suggest doing sth，doing 表示的是一个动作吗？动名词的词性是名词，为什么后面又...

问题 状语从句省略的be动词问题

状语从句的省略条件是主从主语一直或从句主语为it，从句主要动词为be动词，那么这个句子If he was asked，he would come.从句可以省略为If asked，但是从句的be动词为助动词，怎么是主要动词呢？

问题 yet的词性和词义

]看到一篇科普文章中一句话： The earth unique position in the solar system allows it to house phenomena yet to be found anywhere else in the universe. 请教老师这句话中yet的词性和词义各是什么？并请用这个词性词义，再举出一些例句来说明。

问题 好题分享(34)：单选题

In fact, it avoids the tax from being reduced or allows the tax to be increased, ______.A. as may be the case  B. as is the case  C. as the case may be  D. as the case is

问题 cause用法疑惑

...misfortune you can suffer is one that you caused yourself, especially when it hurts those close to you.请问老师：定语从句you caused yourself中，结构是 you caused one (the worst misfortune) yourself，还是 you caused yourself one (the worst misfortune)？或者两种分析都可以？...

问题 连词能不接句子吗

Once inside, it will be maneuvered remotely by operators at another building at the plant because of the fatally high radiation emitted by the melted debris. 这个once 是连词还是副词？能直接接inside吗？是不是要接句子？

问题 句子成分

We need principals from all stakeholder groups in Davos to summon the imagination and commitment necessary to tackle the problem.请问 necessary to tackle the problem 作什么成分？