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问题 I promised 和 I have promised 对比分析

...I would have to buy a new mower or let the grass grow. Needless to say our house is now surrounded by a jungle. Buried somewhere in deep grass there is a rusting lawn mower which I have promised to repair one day.4) "Buried somewhere in deep grass " 和 “ which I have promised to repair one day”...

问题 having been heated是什么结构

The iron ball having been heated to a high temperature, we found it began to melt.请问老师这 里having been heated 中的 have 为什么要加ing？

问题 take that next step中的that是什么句子成分

A positive response to a new idea from an engineer, a venture capitalist, or just anyone listening, is often enough to motivate someone to take that next step.上文中的 that 是什么词，什么句子成分，去掉可以吗？谢谢回答。 

问题 表示转折时yet与but的区别是什么

China has put forward the concept of “quality education” for many years, ________ the exam-oriented education hasn't changed.A. yet         B. since     C. but       D. whether答案为 C, 为什么 A ...

问题 关于 including...短语的句子成分

...语，但能转换成定语从句的短语不一定是定语。比如：He has a lot of books, but none of them are useful.这个句子中的 but none of them are useful 可以转化为定语从句 none of which are useful，但我们不能说 but none of them are useful 就是定语。—...

问题 情态动词(shall, should等的用法)

Tom           better than to ask Dick for help.A.shall know B.shouldn't know C.has known D.should have known请老师详细讲解这道题，谢谢老师啦!

问题 as…as的翻译

...这样的例句It is hard to imagine that something as small as a molecule has weight，but it does.译文是这样的：分子如此小的东西有重量，这是难以想象的，但分子确实有重量。as…as没有译成像…一样，而是如此。之前在博客上看到过这种用法，...

问题 这段话什么意思，有关于同位语的定义

...onsidered an appositive phrase, but rather a single noun construction. For example:“My brother Michael lives in New York.”“America’s first president, George Washington, was born in the colony of Virginia.”

问题 an army of 后加名词复数的主谓一致

An army of scientists have taken up the cause. 句子是来着专四模拟题Dictation里的，这句话的谓语是否能用 has， 中心词是army 还是 sicientists？

问题 句子断句问题(go over all of us)

:The puddle has gone over all of us.这个句子中,go over + all of us 句意不通 ,如果是 go + over all 的话, of us 这里又缺少了一个all或者多了一个of?

问题 like nothing 理解疑惑

We're facing a crisis like nothing we've seen before.1)上句like=as?2) 可以改写成 We're facing a crisis like something we've not seen before. ?    二者含义，语气等有不同吗？

问题 left和empty的词性

...非常感谢！A possible answer in crowded California cities is to build housing on the growing number of shopping malls and big box retail stores left empty by consumers shifting their purchases to the web, which already have ample parking and are close to existing neighbourhoods.

问题 动名词还是分词? 以下句子怎么判断?

1. But it has also led to lots of American words and structures passing into British English,......2. If you turn on CNN, you find newsreaders and weather forcasters all speaking with different accents.....请问两句中, 怎么判断是动名词的复合结构, 还是分词作宾补呢?

问题 on top of 为什么不加定冠词the

...什么不是on the top of a pile...?  2) at being discovered = at having been discovered ? admitted hiding = admitted having hiden ? 含义相等，语法上正确吗？谢谢老师！

问题 句中多个介词复用的情形

...n which for a period of time a child lives with and is cared for by people who are not the child's parents. 这句话是韦氏高阶上对foster形容词性的释义，但是这句中的with、for、by把我看晕了。按理说，lives with people就够了可是people前面多了一个by。is cared...