一、指可爱、美丽的动物用 she 表示，指凶猛的动物用 he 表示：
I've a lovely cat. She is my favorite.
The dog waved his tail when he saw his master.
二、表示车、船、祖国、大地、月亮等时常用 she 表示：
China is my motherland. She's getting more and more beautiful.
What's wrong with the car? She won't start.
三、用 we、you、they 泛指一般人：
We all make mistakes.
You should keep calm even when you are in danger.
They say it's going to be another cold winter.
you and I
you and he (she)
he (she) and I
you, he (she) and I
we and you
we and they
we, you and they
You, he and I should help each other.
She and I are of the same age.
I and my brother made the mistake.