请问kind,a kind of,kinds of,all kinds of,a variety of的意思和区别

区别是：
a variety of主要强调种类、数量之多，且相互之间有差异。
all kinds of一般用于形容种类之多，表达含义更笼统一些，没有那种强调“异彩纷呈”、“种类各异”的感觉，但强调种类“全面”。

例句：
a variety of
1、Semiconductor devices can perform a variety of control functions in electronic equipment.
半导体器件在电子设备中能起各式各样的控制作用。
2、The artist recorded interviews on a variety of topics and modelled an appropriate animal for each voice.

这位艺术家把关于各种话题的访谈录了下来，并为每种声音塑造了一个贴切的动物模型。
3、Minerals can be absorbed and utilized by the body in a variety of different forms.

人体可通过很多不同形式吸收和利用矿物质。
4、We spend the time collating and presenting the information in a variety of chart forms.

我们花费时间用各种各样的图表来比照和展示这些信息。

all kinds of
1、His family suffered all kinds of hardships during the war.
他家在战争期间受尽了苦难。
2、He went through all kinds of hardships in the old society.

他在旧社会受尽了苦。
3、I met some very ignorant people who called me all kinds of names.

我碰到了一些非常粗鲁的家伙，他们用各种