kind of是相当、有一些的意思，跟a little差不多，后面要加形容词或副词。I am kind of tired.=I am a little tired.我有点累；I hate this kind of cheap emotion.我讨厌这种肤浅的感情。
Kinds,kind of,kinds of,a kind of辨析
1.kinds后面跟可数名词复数；如果是kind，那后面接名词单数（可不可数都可以）
2.kind of是副词，修饰动词、形容词、副词；语义为稍微、有几分、有点儿。例句：
She looks kind of pale after her illness. 她病后面色有点苍白。
He kind of likes girls with long hair. 他有点偏爱长发女孩。
I‘m kind of tired. 我有点累了。
3.akind of是单位词，限定名词；语义为一种/一类，后面名词可以是单数也可以是复数。例句：
A cocoon is a kind of silk covering made by an insect. 蚕茧是由昆虫制造的一种由丝组成的外包层。
The Chinese are a kind of people who love peace but oppose hegemony. 中国人民热爱和平但反对霸权。
4.kinds of是数量词，修饰说明名词，语义为各种各样、不同种类，后面只跟复数名词。例句：
I like all kinds of drinks. 我喜欢所有不同种类的饮品。
Some kinds of viruses cause cells to multiply rapidly and produce cancer.Other kinds of viruses, or a combination of several different kinds, cause the common cold. 某些种类的病毒使细胞迅速繁殖并产生癌。其它种类的病毒或者几种不同种类病毒的结合引起普通感冒。