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问题 while引导的是表语从句吗

The best time to start thinking about possible careers is while you are still at school, before you make any choices about your future education.请问老师们，while引导的是表语从句吗？

问题 as作什么成分

But a new study finds that there's another group of adolescents who are in nearly as much danger of experiencing the same psychiatric symptoms: teens who use tons of media, don't get enough sleep and have a sedentary (不爱活动的) lifestyle.总感觉这里的as是在比较，但是只有一个as...

问题 be home to 为什么没有冠词

Apart from being the kingdom of flowers, it is home to many ethnic minority groups.上面句子中的 home 前面为什么没有冠词？

问题 虚拟语气时态问题

If you told the truth to your principal, he would be able to give you much better suggestions than I can.（这里是对现在虚拟）曹老师你好，我想向您请教一下：我们老师说这里的than I can也是一个虚拟语气，那这里既然是对现在的虚拟，为什么这里的ca...

问题 这里的if not是表示让步关系吗

what “if not” means in the following sentence“And this learning process took years, if not   most of one’s lifetime.

问题 这里的with结构是做什么成分

Highland barley is used to fire pottery，leading to an unusual chemical reaction with the clay from local mountains.请问这里的with短语是做什么成分，怎么翻译呢？

问题 一般过去时还是过去进行时

曹老师，您好！请帮忙看看这道题：While the moon was rising, it ________ (shine) bright. it was so beautiful.答案给的是 shone, 为什么不是was shining? 谢谢您！！！这是一道初二的题。

问题 sunk可以用作形容词表示“沉没”吗

When they arrived, they found the ship had been sunk.请问这个句子对吗？其中的 been 是不是多余的？如果有 been，这个 sunk 就应该是形容词表示“沉没”，这也对吗？

问题 may do what we like有问题吗

During the holiday we may do what we like.这个句子对不对？

问题 come和go用作系动词时有何区别

come和go都可用作系动词，它们有区别吗？仍然是“来”与“去”的区别吗？ 比如：The meat has gone bad. 句中的 gone 可换成 come 吗？

问题 according to可用作表语吗?

according to 主要用作状语，这我知道，但它可用作表语吗?比如： How did you do the work? It was according to what told me. 这句中的according to用得对吗?

问题 become后可接不定式吗

我写了这样一个句子： I finally became to like the subject. 意思是说：我终于变得开始喜欢这门课程了。 老师说我的句子不对，因为become后不能接不定式。请问，是我对还是老师对？我的句子真有错吗？

问题 替代词 that 与 those 用法疑问

The remains have been identified as ______ of a Mr Thomas, who lived in Richmond. A. that     B. those 请问是选 that 还是选 those？为什么？谢谢！

问题 buy one's excuses是什么意思

When the public did not buy their excuses they had to eat their words.请问句中的 buy 是什么意思？

问题 英语难句求解

“In the general population today, at this genetic, environmental level, we’ve pretty much gone as far as we can go,”这句话不理解，主要是后半句不懂意思 we’ve pretty much gone as far as we can go,”求解释老师