Oh, I had an accident skateboarding.我玩滑板的时候出了点意外

have an accident:出事故(失事)

Do not rush or you may have an accident.

不要这么赶，否则你可能会出事故。

She was sneaking out of there way before she had the doctor's permission.她早在得到医生许可之前就偷偷溜出来过了

sneak out of:偷偷溜走

How did he find a way to sneak out of the house?

他是怎么设法从房子里溜出来的？

It's kind of hard to explain.解释起来比较复杂

kind of:有点儿

He was kind of a fool.

他有点儿傻。

常用短语:

something of the kind类似的事物

I have heard something of the kind.

我也听过类似的话。

nothing of the kind决不是那样(毫无相似)

People had told me she was very pleasant but she's nothing of the kind.

人家告诉我她很可爱，可是她根本不是那样。