During the summer, my skin sometimes gets greasy.

夏天我的皮肤有时候会出油。

Sometimes I think he dislikes me.

有时候，我觉得他不喜欢我。

You must have noticed how tired he sometimes looks.

你一定注意到他有时候显得特别疲惫。

Other people's jobs were exactly the same—sometimes good, sometimes bad.

其他人的工作也一样—时好时坏。