begin

As everybody’s here, let’s begin..大家都到齐了，我们就开始吧。

In the third year students begin the study of classical Chinese..学生在三年级开始学古代汉语。

The president begins talks with the prime minister tonight..总统将于今晚和首相展开会谈。

begin with,以…开始；开始于…

begin at,几点开始；从……开始

begin again,重新开始；重做

begin to do,开始做某事

begin as,作为…开始

begin doing,开始做某事