variety of skills还是 various of skills?

问题描述:

variety of skills还是 various of skills?

有3种表达方法:
1.a variety of skills
2.varieties of skills
3.various skills
若用variety,单数则前面一定要加a,复数则不加
若用variety的形容词形式various,则后面直接跟名词,不能跟of