✔ 最佳答案
If I were you <------------------Conditional type 2--未發生 ; unlikely to happen or impossible things.
If I were Andy Lau <--------Impossible
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/2cond.htm( Here is a link for you.)
You can say
如果我是你, 我絕不會這樣做.
If I were you, I would NEVER do that/this. ( not happened yet)
Usually we say " to do THAT".
were ---------------- would <------Correct!
_were --------------will <--------Wrong!_____________________________
If the event is over and you want to talk about this PAST過去的 event.....
Conditional of type 3 for comments on past events( something like
馬後砲 in Cantonese.)
If I had been you, I would NEVER have done that/this.
That's it.
8686868686886868686