The last time I saw him was in May.

　　我上次見到他是在五月份。

　　Someone might find out, and that would never do.

　　也許有人會發現，那是絕對不行的。

　　Try his home number ─ he might just be there.

　　試試他家的號碼——他也許在那兒。

　　We began work on the project in May.

　　我們于五月份啟動了這項工程。

　　She may need your help with some business matters.

　　她也許需要你幫助處理一些業務方面的事情。