cant與maynot的用法區別

　　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。

　　You may need to give the floor a rub-down with glasspaper.

　　你可能得用玻璃砂紙打磨一下地板。