此何许人？

where's this person from?

年四十许

be about 40 years old

如许

so much

少许

a little

许为佳作

praise as a fine piece of work

以身许国

dedicate oneself to one's country

他许过我请我看电影

he promised to take me to see a film

特许

give special permission

许他请假三天

allow him to take three days holiday

只许看，不许动手。

You can look but you can't touch.

戏院里不许吸烟

smoking is not allowed in the theatre

主人不许客人们走。

The host does not permit the guests to leave.

姑娘已许了人了。

The girl is already engaged.

他没来开会，许是不知道。

He never came to the meeting. Perhaps he didn't know about it.

他许不来了。

Maybe he won't come.