把下列句子改成英文

问题描述:

把下列句子改成英文
1.这是一个只手表.
2.那是一辆自行车.
3.我们家有三个人.
4.他最喜欢的颜色是白色.

This is a watch
That is a bike
There are three people in my family
His favourite colour is white