形容词
2. This is the only watch that I have.
这是我唯一的表。
副词
1. He came only yesterday.
他昨天才来。
2. At present we can only wait and see.
目前我们只好等等再说。
连词
1. only的意思
1. You may come at any time, only you had better let me know beforehand.
你什么时候来都行,不过最好先告诉我一声。