1. What's wrong with you?
你怎么了？
还能这样说：
What's the matter?
Is anything wrong?
应用解析：
no matter what 不管怎样，无论如何；
what is called 所谓；
what is more （插入语）加之，而且
2. I'm not feeling well.
我感觉不舒服。
还能这样说：
I don't feel well.
I feel sick.
谚语：
Leave well alone.
不要弄巧成拙。
3. You look pale. Are you okay?
你的脸色很难看。没事吧？
还能这样说：
You look very bad. Are you all right?
You look ill. What's wrong?
应用解析：
beyond the pale 越轨的，社会不容的；
break the pale 越界；做得过分；入不敷出；
outside the pale 被排斥在外的；
inside the pale 在……范围之内
4. She passed out.
她昏过去了。
还能这样说：
She fainted.
She swayed and fell in a faint.
应用解析：
let it pass 暂且不谈，且不管它；
sell the pass 出卖事业，放弃立场，背叛；
pass (round) the hat 募捐；
pass sb. off 忽视某人