He is the yongest in the class.在班级里他是最年轻的
The weather in Shanghai is better than that in Wuhan.上海的天气比武汉的好.
Cats are cleverer than dogs猫比狗聪明.
The rabbit is the smallest of them .这个兔子是他们中最小的
this room is bigger than that one.这个房间比那个大.