kind of, a kind of, kinds of

kind of一点,几分
e.g
I hate this kind of cheap emotion.
我讨厌这种肤浅的感情.
a kind of一种
e.g
An apple is a kind of fruit.
苹果是一种水果.
kinds of各种各样的
e.g
The river teems with all kinds of fish in summer.
夏天这条河里各种各样的鱼多得很.