其实是个复合时态.have+ 过去分词 等于刚刚完成的动作.
I haven't 是 I have not 的缩写.
I haven't washed the dishes.
I have not washed the dishes.
上两句都是一样.
have 做main verb 时候,是 ”有“的意思.
I don't have 是指,我没有.have 后面不接过去分词
两样都可以.
I have not played soccer.
I've not played soccer.
I haven't played soccer.