Don`t be so hard on yourself.请解释一下这里的be的用法.谢谢☺

问题描述:

Don`t be so hard on yourself.请解释一下这里的be的用法.谢谢☺

这是“系表结构”的祈使句句式,be 是连系动词
再如:
Don't be too nervous.
Don't be so excited.
Don't be late again.