Question

I haven't seen him for many years.怎么改为肯定句？

Answer 1

这句话改为肯定句，可以这样来改，I have known him for many years.我已经认识他很多年了。

追答

这句话改为肯定句，可以这样来改，I have known him for many years.我已经认识他很多年了。

Answer 2

去掉 not 就是肯定句。
I have seen him for many years. 我已经见过他很多年了。

Answer 3

I have been away from him for many years.意思不变的肯定句。我离开他已经有很多年了。

Answer 4

肯定句：
I have known him for many years.
意思是：
我认识他有多年了。

Answer 5

I haven't seen him for many years.改为肯定句是：
I have seen him for many years.