The last time I saw him was in May.
我上次见到他是在五月份。
Someone might find out, and that would never do.
也许有人会发现，那是绝对不行的。
Try his home number ─ he might just be there.
试试他家的号码——他也许在那儿。
We began work on the project in May.
我们于五月份启动了这项工程。
She may need your help with some business matters.
她也许需要你帮助处理一些业务方面的事情。