是don't.

You'll feel cold if you don't wear a coat.

不穿外套你会觉得冷。

Sorry， I don't follow you.

对不起，我听不懂你的话。

I don't grovel to anybody.

我对谁都不会卑躬屈膝。

Why don't we go together?

我们为什么不一起去呢

The numbers don't jibe.

这些数字不一致。