Generally, we use " hang on" in the imperative form, which means we give a command.

一般我们在祈使句中使用“hang on”，意思是发出命令。

" To hang in" is to continue, to survive, to not give up; usually in an imperative form.

“坚持”就是继续、生存、不放弃；通常以祈使句形式出现。

This is called the imperative form and it's used for giving advice, and also to give orders.

这称为命令式， 用于提供建议， 也用于下达命令。

You don't need to say: " a" in the CV because this is an imperative form.

您不需要在简历中说：“a” ，因为这是命令式。

And this is one that we definitely most often use in a command form as well, imperative form.

这也是我们最常以命令形式使用的形式，命令形式。