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问题 since after是什么用法

Economy is one powerful motive for camping, since after the initial outlay upon equipment, or through hiring it, the total expense can be far less than the cost of hotels.请问为什么两个 since after 连在一起用啊？

问题 句中为什么用 is

The peachful landscape of the "Emerald Isle" and its many counites is a true feast for the eyes, with its rolling green hills dotted with sheep and cattle.句中为什么用is？

问题 省略分析

than后面的句子重复成分能省略嘛？Watching a baseball match is no more intellectual than listening to music is.后面的is能省略嘛？

问题 rush用法

有没有rush sb to do这个结构，我在牛津，朗文，新牛津，柯林斯字典查了都没有，如何求证有没有这个结构 

问题 but的词性

I have no choice but to watching TV.这句话中but是什么词性？

问题 副词用法

It won’t hurt you to talk a little less.请问老师：1. less是副词修饰动词talk吗？2. a little是副词短语修饰副词less吗？

问题 形容词能否共用一个最高级

Chinse Spring Festival is the most magnificent and the most important festival for Chinese.请教老师，原句可以是 the most magnificent and important festival吗？如果可以，两句区别何在？谢谢老师。

问题 be动词有完成时态吗

For forty years Jane Goodall has been outspoken about making the rest of the world understand and respect the life of these animals.1.has been 是is 的现在完成时，那么 be动词时有完成时态的？2.about介词短语充当什么状语呢?

问题 为什么but also 后倒装了？

Not only do the students approve the measure, but also does the administration.这是章振邦高级英语语法书上的例句。为什么but also 后倒装了？

问题 状语和状语从句

During the winter holidays in her senior year ,  while she was driving during a storm , her car ran off the road and hit a tree.请问During the winter holidays in her senior year 的成分是状语， while she was driving during a storm的成分是时间状语从句吗？两个句子都是状...

问题 句子结构分析

All around us was the sparkling sea, so blessed, and the boat rising and falling beneath us, sweetly carrying us along.上面这句话来自一篇英文小说，想请教一下老师，and the boat rising and falling beneath us 这个结构的意思不难理解，但是这个结构没有动词，为...

问题 tune out和long的意思

While Internet addiction is not yet considered a clinical diagnosis here, there’s no question that American youths are plugged in and tuned out of “live” action for many more hours of the day than experts consider healthy for normal development.Television, long a popular “babysitter,” rema...

问题 请问这里的open应该表主动还是被动

这是一道改错题：Open in 1987, Futuroscope is one of the largest space-age parks in the world.答案为把open改为opened，非谓语，与 Futuroscope的关系是被动。我的疑惑是：字典的解释open既可以用主动式，也可以用被动式：（1）When a shop, office, or publ...

问题 分词形容词与动词分词形式的辨析

请看以下例句：The seats reserved for the disabled.The bottle full of water is here.请问以上两个例句中的ed形式是分词还是形容词？ 

问题 on和off表附近的区别

a man's store on/off Fifth Avenue.     The hotel is on the coast.   An island off the coast of France.请问off和on在表示“在……附近”时的区别？谢谢