这两个句子有些地方不太明白：He worked in construction up until a couple years ago.这里为什么不直接用until，为什么要加up？up until是双重介词中间省略了某个词吗？如果up是副词那它up是什么意思呢？I'm surprised that you of all people should sa...
We're seeing more precipitation falling as rain rather than snow.The snowpack isn't lasting as long with the higher temperatures.请教老师：1）句中的rather than可否换用other than, 二者的区别是什么？2）为什么句中只有一个as, 即as long ？是不是可以这样分...
...d,low-level IT staff to put right ,and seen as a concern only of date-rich industries such as banking,telecons, and air travel ,information protection is now high on the boss’s agenda in businesses of every variety.这里的形容词为什么要用逗号呢？是因为都是观点（主观）形...
Chinese President Xi Jinping and Nepalese President Bidya Devi Bhandari jointly announced the new height of Mt. Qomolangma, which is 8848.86 meters, in letters they sent to each other on December 8.老师您好，请问这里的letters后面省略了引导词吗？是where吗，引导定语从句。
Well, I understand that your company has a chemical processing plant.
Clearly, there are chemicals in our bodies that don't belong there.后半句：我们身体里的一些化学物质不属于那里。是什么意思呢？我理解成了那些化学物质不应该属于化工厂（that指代chemic...
今天看到一个英文句子：Writing a major academic work can be difficult
enough, but it is even more so when working in a foreign language. 我对其中的but有点疑问，but前后的语义并非转折关系，怎么用了but呢，难道它也可以表示递进的意义？还是这里的but...
And
it is providing to be an increasing powerful tool in encouraging people to
purchase. 这是北京高考真题阅读理解中的一句话，这里的 it is providing that是什么用法， providing在这里该怎么理解呢？
... sports team make the friendship between membrs easier to form.2. Children interfering in their parents' right to remarry has become a social problem.请问在第一句话中chances是复数形式，谓语是使用复数形式的make。但是为什么在第二句话里Children是复数形式，但...
...ardens.Fairly close to where refreshments are available, there's a dog-walking
area in the southern part of the park, leading off from the path.想问下这里lead off是固定搭配吗还是lead是动词，off是副词？off的用法是？
下面的内容是 2013 年湖北高考卷的听力独白：The coming next program is One Man Show by David Mellor. The guy David Mellor needs no introduction. He’s so famous, not only because of his talent, but because of his looks. Neither pretty nor ugly, they’re strange especially his face....
查字典，有固定搭配 part of sth or sb。part 前一般不加词。但是下面这句：Everything that you learn becomes a part of you and changes you。请问 a part of 和 part of 的区别？请问英语有 many parts of 的说法吗？