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问题 用过去完成时还是用过去时

He said her grandmother _______________(teach) him to read potery before reaching the age of three.很明显，said发生在过去，句子里面的teach发生在said的过去用过去完成时，所以填 had taught为什么答案给的是 taught，他的理由也很奇怪，“他说他奶奶三...

问题 有些句子是否用现在完成时和一般将来时都可以

The WTO adds that that amount will have increased / will increase to 66 percent by 2025.语法书上说 by+将来的时间要用将来完成时，所以将来完成时是不是对的?是不是用将来时也可以?

问题 关于for的使用

...m malice; for nations, like individuals, can find themselves locked into difficult positions, unable to back down.A. do not always results from malice; for nations, like individuals, can findC. do not always results from malice; nations, such as individuals, can find老师，按照GMAT的规则...

问题 for the right price表方式状语用法疑问

Purchasing has been referred to as doing “the five rights”: getting the right quality, in the right quantity, at the right time, for the right price, from the right source.请问: for the right price，这里为什么不用at the right price？

问题 all与总括词连用就一定表示部分否定吗（求权威出处）

...尽相同（地址：https://www.reddit.com/r/grammar/comments/85reea/all_is_notnot_all_is/  ）。我的问题是：这个部分否定规则有没有正规语法书的出处？谢谢老师！

问题 one与a one

—Would you like a drink?—I’d love _______ thank you. A. oneB. a one此题A可能是最佳答案，请问也可以选B吗？

问题 名词前面的限定词可以叫作定语吗

I have many friends.He wasted too much time.We bought several cups.请问这些句子中的限定词可以叫定语吗？

问题 系动词后跟副词的问题

老师好，网上看见个句子I feel distinctly。我知道系动词后可以接地点副词的用法。这里feel如果是实意动词的话好理解，但是不是表个人感受的做系动词吗？http://www.yygrammar.com/Article/201504/3961.html 所有这里feel如果是系动词的话，后...

问题 这样的句子是有两个地点状语吗?

I brought these things back from my holiday in Spain.请问from holiday 和 in spain ，是不是存在了2个地点状语？

问题 skin for 究竟何意？

I threw him a dollar and skinned for the steamer.书上把skin for翻译为：快速溜到汽艇上。但是，翻遍所有词典等等，均没有找到skin for为 快速溜等类似的含义。请教老师，这里的skin for 究竟何意，如何理解，谢谢！

问题 such...as these的含义

I cannot comprehend the neglect of a family library in such days as these.在当今这样的时代，我怎么可能忽略家庭的藏书。请问老师in such days as these是什么用法？可以细分一下吗？

问题 让步状语从句用不用may, might的区别

比较下面两句：Clever as you are, you should study hard.Clever as you may be, you should study hard.它们有区别吗？谢谢专家！

问题 that从句的类型判断

请教：It was in that spirit that the UCP were first introduced.什么从句？

问题 as的用法

It seemed as useless as a blind man lighting a candle.这里的第一个as是副词，那第二个as呢？什么用法？lighting这里属于什么用法？

问题 成分分析

The Tampa Bay Buccaneers quarterback posted the clip, but outlets are tossing it back in his face.请问老师，句中的back和in分别做什么成分？它们和动词的关系是什么？它们之间又是什么关系？类似的结构该如何分析？