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问题 有关过去完成时的句子分析

The Dream of the Red Chamber, the classic novel written  by Cao Xueqin from the Qing Dynasty, also described a maid who  sent/had sent a hand warmer to Lin Daiyu in one chapter.这里是用 sent 还是 had sent 呢，我的理解是，曹雪芹写描述的时候，用了过...

问题 关于close用法的两个问题

...r closed.对不对呢？问题二：        下面是一个填词题：When David and Alex reached the gym gate, David rushed round the corner too quickly. His wheels went off the path. Crash! He fell down. Thump! He landed hard and didn't move. His eyes s(       )  closed.   请问这里...

问题 曹老师解答存在句的非限定形式，自己还有三处不懂的地方

...只有提到there being）？第三个疑问句： The 9:15 is the fastest train （that）there has ever been. 这里there have been您和章正邦老师并未提及这个there have been的概念。

问题 介词后动名词的逻辑主语可以和动名词换顺序吗

While it is important to examine the relationship between technology and learning,  that debate often devolves into a tit for tat of dueling studies and anecdotes. 比如短语a tit-for-tat of dueling studies and anecdotes中的dueling studies and anecdotes

问题 Paul is friends with Bill中的friends的释义

在薄冰老师的语法书中名词章节有这个例句，这个无数念的无但形复形名词是否表示friends在此用作不可数名词，表示友谊？是否为固定搭配，仅friends一名词在此处可用作不可数名词？恳求老师解答，谢谢!

问题 rather than是介词还是连词

Rather than Robert drive in his present state, I'd prefer to drive him home myself.请问专家老师，划线部分是什么句法成分？rather than 是介词还是连词，后面引导的是句子还是短语？谢谢老师的解答。

问题 并列谓语和双重谓语的区别

1.He was happy and left this morning.2.He left this morning very happy. 上面句子中1是并列谓语，2是双重谓语吗？两者有什么区别？？I am ready to fight Zorro and（to） win!这个句子是并列表语吗？ 

问题 语法分析: be up late doing sth

I was up really late doing this.请问这里的现在分词作什么成分？

问题 这里的Can是什么用法

...子我不能理解这里的can't属于以上四种意义中的哪一种？It's your birthday?I can't believe it！请问这里的can't是什么用法意义"能力"“理论可能”"许可""不可能"？ 

问题 focused/focusing

I have to say unless we want an education system just ______ (focus) on making people consumers and not on helping them be producers, this emphasis on reading only —which does happen in so many places—is very short-sighted.答案是focused，focusing可不可以呢？focused和focusing区别?

问题 过去分词短语做后置定语修饰代词的用法

I would like it thinned out this time.这里的thinned out引导的过去分词短语修饰it对么，然后过去分词有被动的含义，可以这样理解么。

问题 虚拟语气为什么用was不用were

I feel as if high school was only yesterday是虚拟语气吗里面的was为什么不用were？

问题 what little 和 what few 的用法

He visits what few friends he has.She is responsible for what little I have learned.

问题 间接引语的句子时态(涉及客观事实)

He said, "I am from China."的间接引语，我认为是He said he is from China.但是看网上说的是was，不是is。我来自中国，这不是一个客观事实吗？应该不随主句时态呀。求解答，谢谢各位大神。

问题 情态助动词后接进行体

阅读《牛津指南》，遇到如下例句：I'm afraid we must be going.把“情态助动词后接进行体”解释为“与现实拉开距离”。请教一下各位老师，如何理解这里所描述的“与现实拉开距离”？十分感谢！