问题 不定冠词的用法

A highly sensitive method for the detection of trace amount of poisonous susbstances in milk and meat products is to be popularized in a country embarrassed by the scandals of clenbuterol and melamine contamination in food.请问"tace amount"前面为什么可以不加不定冠词"a&q...

问题 which the room 与 which room 有什么区别

I forget ______ I was supposed to go to.A. which the room B. which room

问题 What does it mean to be smart为什么要加to be

What does it mean to be smart?请问这句话中的smart前面为什么要加to be？改成 what does it mean smart可以吗？谢谢老师！

问题 It's a thousand to one against our finding him at the house 难句理解，究竟何意？

...ontinued as we retraced our steps swiftly down the path. "Those shots must have told him that the game was up."请教老师：为什么这句话的意思是“要想在室内抓住他，可能性微乎其微” 。a thousand to one 的意思是“千对一，几乎绝对的，几乎可以肯定” ...

问题 necessary后接介词to还是for

表示“对……是必需的或必不可少的”，形容词 necessary 后面是接介词 to 还是 for？我发现：有的人说要用 to，有的人说要用 for，也有的人说用 to 和 for 都可以。请专家老师给个明确的用法，谢谢！

问题 accepted on to 怎么理解

We have seen a considerable increase in England in the number of women accepted on to full-time undergraduate degrees in science,technology,engineering and maths.

问题 will在这里可以省略吗

... you.介于以上例句，我想问下下面这个例句: Three years will have passed before i know it 是否可以写作Three years has passed before i know it 谢谢各位大神给予解答。

问题 请问此处为什么用pay这个动词的原形呢?

I also had to do some community service. It was either that or pay a large fine, but i didn't have any money, so i spent 200 hours gardening in the local park.请问此处为什么用pay这个动词的原形呢?

问题 关于不定式的一般式与进行式的区别

...定式表示的动作正在进行, 这时要用进行时。I am very glad to be working with you.我要问的是在这种情况下用不定时的一般式行么？尤其是没有上下文暗示不定式所表示的动作与主句谓语动词所表示的动作同时发生。二者有何区别？▲...

问题 表可能性为何不用can be

_____ be a definite relation between these paintings and the …A.There can           B.There may练习详解里面这样写到，但学生并不是很理解：情态助动词can虽然也可用来表示可能性，但它不用于表示存在的there be结构中，表示存在某种可能...

问题 have to do sth可以用于过去完成时吗

have to 可以有多种时态用法，但可以用过去完成时吗？如果用过去完成时，那不是成了 had had to? 感觉好奇怪。

问题 关于what should be的用法

Consequently, what should be an enjoyable time can become an imposition, as well as a disappointment at the same time.an enjoyable time can become an imposition是一个完整句子，请问前面的what should be作什么成分？

问题 as用法的一些困惑（如何判断as前后的肯定和否定所表达的含义）

...题目，例句是某个老师给的补充。 题：Few would dispute that the term applies to the Unabomber, whose manifesto, published in 1995, scorns science and longs for return to a pre-technological utopia. But surely that does not mean environmentalists concerned about uncontrolled industrial...

问题 defend to 是什么意思

老师好！请帮我分析下面句子的结构和提供汉语译文。谢谢！I will defend to the death your right to do ....

问题 分析成分:He used to have a lot of meetings to attend.