问题 现在分词的完成被动式与不定式的完成被动式

Some Martian rock structures look strikingly like structures on Earth that are known ______ by microbes.A. having been createdC. to have been createdC是正确答案，可是A和C都可以表示非谓语的动作先于谓语动词的动作，为什么不能选A?

问题 when they are doing/do sports一般现在时还是现在进行时

And what's more, students are playing at schools and their clothes may be damaged or dirty during break time or when they ______(do) sports.填are doing 还是do呢？两个有什么不一样吗？

问题 虚拟语气的主从句谓语时态不相呼应

下面是2013高考英语的北京卷考题：If we ________a table earlier, we couldn’t be standing here in a queue.A. havebooked      B. booked       C. book   D.had booked参考答案是D。好像是考查虚拟语气。但是，既然是虚拟...

问题 关于out与outside的区别

...有什么区别？看了一道题：I can't go out and play with my friend_______.A.out          B.outside百度说，outside表示某处的外面，out表示远处的外面，很懵啊，怎么感觉AB都可以呢。请老师帮忙解释下out与outside的区别，比如eat out/eat outside,go ...

问题 sunlight 搭配什么介词

The exposure _____ the sunlight is bad to your skin.   A. under   B. in   C. to   D. from希望老师可以解释一下，谢谢。

问题 neither的否定意义

______ Austin had made no grammar mistakes in his thesis paper, but had he well prepared for it. A so     B neither      C both      D either请问这个为什么选B呢?

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问题 为什么不选B

With the application of 5G technology _____ profound changes in almost all fields throughout the world.A. will come         B. are coming         C. comes         D. come

文章 At School 能否表地点？（例句资料集中贴）

...：https://www.nytimes.com/2013/04/15/us/missouri-school-trains-teachers-to-carry-guns.html非正式文体部分推文脸书类推文脸书多属口语类，句子经常出现省略成分的现象，但受过良好教育的老外发推文，只会省略那些不影响理解的部分。为“严谨...

问题 动词时态的相关疑惑

Until we have discussed all the details, no decision _____ about any new operations.A. is made       B.is being made       C.has been made       D .will be made这道题目C，为什么不可以选呢？ 直到我们已经讨论了所有细节，仍然没...

问题 选择题中的时态考题

He said that he would be able to see me when he ______ that letter.A. wrote   B has written C. would have written    D.had written答案选 D,为什么不选 A 啊?

问题 Which…grow well还是Which…grow better

Which kinds of vegetable grows _______ (good) in your hometown? 所给答案是better。但可以填well吗？请问这个句式中的Which…grow well还是Which…grow better有什么区别？（除了意思上的区别外）