conj.
1. (表示條件)如果
He will come if you invite him.
如果你請他,他會來的。
2. (表示假設)假如,要是
If I were you, I would never do that.
如果我是你,我決不做那件事。
3. (表示讓步)即使
We'll go even if it rains.
即使下雨我們也要去。
4. 是否
I wonder if she is ill.
不知她是否病了。
5. (表示因果關係)每一次...的時候(總是會)
If I feel any doubt, I inquire.
我一感到有疑問就隨時詢問。
n.
1. 條件;設想[C]
There are too many ifs in his offer.
他的提議中條件太多了。