我的钢笔是红色的。他的是黑色的。

My pen is red. His is black.

youdao

我有两支钢笔，一支是红色的，另一支是黑色的。

I have two pens. One is red, the other is black.

youdao

我有两支钢笔，一支是红色的，一支是绿色的。

I have two pens. One is red and the other is green.

youdao

我有两支钢笔，一支是红色的，一支是绿色的。

I have two pens. One is red and the other is green.

youdao