conj.
假如，假设，倘若，如果
例句：
You can learn something from anything if you pay attention to it.
处处留心皆学问。
例句：
If I were you, I would never do that.
如果我是你,我决不做那件事。
例句：
If you disagree you should speak out.
如果不同意，你就该大声地说出来。
即使
例句：
This is true even if the problem has gone away by itself.
即使问题已经自行解决了，也真的会出现这些顾虑。
