问题 在过去式中表虚拟might do 和might have done用法区别

1) Lily walked in the forest with great caution for fear that she might be attacked by a giant snake. 2）Lily walked very carefully in the forest in case a giant snake might attack her.请问句1）和2）中，主句是过去时态，might be attacked 表示虚拟语气和might have been atta...

问题 如何理解 -ing 在作状语成分时有逗号和无逗号的区别？和非限定性定语从句一个道理吗？

...地环视四周，走了进来。The boy jumped up and down, crying with joy. 孩子们高兴地叫起来，上下跳个不停。(这句能否把 逗号 去掉呢？如果能去掉，有什么不同吗？)

问题 there is sth to do / there is sth to be done比较

there is much work to do 还是there is much work to be done?

问题 be long to do和long to do区别

Maybe he's been around long enough to know that commodity price spikes don't last more than a few years. 第一句是三个副词接在一起吗？around long enough？ He says he didn't stick around long enough to notice any health benefits. 第二句是动词加不定式吗？

问题 不定式作定语和作状语的问题

...子主语都要看呢？应该以哪个为准呢We’ve got a lot of cases to investigate.I have nothing to say on this topic.第一句话cases和investigate应该是被动主谓关系，但是还要受句子主语影响采用主动形式，再如第二句话,nothing应该是say的逻辑主语,是...

问题 it seems to be 改写完成时,是变seem部分,还是to be部分?

我有点搞不清如果before段是过去时,seem部分是该用什么时态？假如前半句我用完成时态,那应该变seem部分还是变to be部分?It have seemd to be a long time before the food came?还是It seems to have been a long time before the food came?

问题 than used to be与as used to be从句中的主语省略问题

本站曾经讨论过 than used to 与 than they used to 结构中主语的省略问题：http://ask.yygrammar.com/q-7876.html 大家大致的意见是其中的主语通常是要省略的。最近管理员推荐了两位大师的文章：http://ask.yygrammar.com/q-26040.html 从各位专家的解答...

问题 as for sb, as to sb, for sb, to sb 有何区别

请教老师，as for sb；  as to sb； for sb； to sb 有何区别？谢谢老师！

问题 way to doing,way to do,way of doing的用法问题

2014年江西高考单选第25题：Starting your own business could be a way to achieving financial independence, on the other hand, it could just put you in debt.为什么是 a way to achieving 呢？不是常用 a way to do 或 a way of doing 吗？另外再请翻译一下，谢谢。 

问题 关于pretend to do的疑问

....yygrammar.com/q-40600.html，在您的这篇回答中您的这段话"Tom pretended to come to my party. 假装这个语义决定了不定式的动作实际没有发生，但却假装在发生，所以不定式的动作在谓语时间被假装在发生，因而具有了同时性。"这段...

问题 one car to every twenty people的to什么用法

问题 There're always two sides to a thing.句中to的用法

There're always two sides to a thing.句中为什么用 to，of 行吗？别的介词行吗？

问题 in order to do中的to do是order的同位语吗？

In order to earn enough money, he worked late into the night. 例句中的to earn enough money是作为介词宾语order的同位语吗？谢谢老师的回答。

问题 ​This is not to say…与None of this is to say…

This is not to say…与None of this is to say…这两个短语的联系或区别？

问题 句法问题

    I have several e-mails to send today.（to send的逻辑主语是I）我想问to send 是主语补足语吗    The mother promised to buy her son a cell phone.（to buy 的逻辑主语是the mother）to buy是宾语吗那么her son a cell phone这个双宾要和to buy看...