Everyone knew it was the most expensive, the most famous of schools.
You had to be entered at birth, if not
before.请问老师：怎样理解if not before在上面句子中的用法和含义。谢谢老师！
请教老师：这是新概念2-48课：Dentists
always ask questions when it is impossible for you to answer. My dentist had
just pulled out one of my teeth and had told me to rest for a while. I tried to
say something, but my mouth was full of cotton wool. He knew I collected match boxes and asked...
It was in the hall ______ we used to have meetings ______ the meeting was held.
A. that, where
B. where, that
C. that,that
D. where, where
第一个空不能填 that 吗？求详解！
一句语法填题：She read the letter through before sending it, _______ (check) for spelling mistakes. 答案：checking，分析是：这里是用现在分词表伴随。疑问：但为什么不填不定式 to check 呢？可以理解为用不定式表目的啊！
The woman was worried it would take her years to settle her account with the hospital. 她很担心自己可能要花许多年去还清这笔医药费。上面这段英文和翻译来自沪江，我想请哪位老师，帮我划一下这个句子的成分，再说一下句子里用到的时态和语...
I've discovered that it isn't only among educated people like ourselves that resistance to the Tartars is to be found（我发现不仅是我们读书人反对鞑子）这里的resistance to the Tartars不是动词短语，它应该作什么成分呢？前面那个among貌似去掉也可以...
The stress we feel arises not from a shortage of time, but from the surfeit of things we try to cram into it.译文：我们的紧张感并非来源于时间短缺，而是因为我们试图在一个个时段中塞入过多的内容。请问老师，from a shortage of time 作句子什么成份？...