may和probably的用法：may可作名词和情态动词，含义为“也许”、“可能”、“可以”、“能够”、“山楂花”；probably只作副词，含义为“大概”、“几乎肯定”、“可能”。

may主要用作名词和情态动词，意为山楂花；也许，可能;可以;但愿。

例句：That may or may not be true.

这可能是真的，也可能不是。

He may be a good father but he's a terrible husband.

他或许是一位好父亲，但却是个很糟糕的丈夫。

You may come in if you wish.

你想进来就进来吧。

May I ask why you took that decision?

我可否问一下你为什么要作出那样的决定？

There is a need for more resources so that all children may have a decent education.

需要更多的财力支持，让所有的孩子都受到良好的教育。

He may have been to some of those places...

那些地方他也许去过一些。

I may be almost 50, but there's not a lot of things I've forgotten...

尽管我已经快到了知天命的岁数，但记忆却不那么糟糕。

The bag has narrow straps, so it may be worn over the shoulder or carried in the hand...

这个包配有细带子，可以肩挎，也可以手拎。

probably作为副词，意为可能;大概;几乎肯定。

例句：It was the best known and probably the most popular of her songs.

这是她最著名的、大概也是她最受欢迎的歌曲。

The White House probably won't make this plan public until July...

白宫可能要等到7月份才会公开这个计划。

He probably thinks you're both crazy!

他可能认为你们两个人都疯了！

Doctors say that she probably won't last out the night.

医生都说她很可能活不过今晚。

Some travel companies will probably go out of business this summer.

今年夏天一些旅游公司很可能歇业。

She could probably exert her influence with the manager and get you a job.

她很有可能对经理施展她的影响力，给你弄份工作。

We could probably trust her with the information but it's just not worth the risk.

我们也许可以将这些资料托付给她，但实在不值得去担这样的风险。