比较：
James is shorter than Ricky.
My brother is older than I am.
Travelling by minbus is faster than travelling by MTR.
Sue's drawing ia better among the class.
Hong Kong is more crowd than other cities in the world.
River A is narrower than River B.
Tokyo is larger than other city in Japan.
A dictionary is thicker than a notebook.
Linda is more clever among the three girls.
最高级：
James is the shortest.
My brother is the oldest.
Travelling by minibus is the fastest.
Sue's drawing is the best.
Hong Kong is the crowdest city.
River A is the narrowest.
Tokyo is the largest city in Japan.
A dictionary is thickest.
Linda is the cleverest among the three girls.
望采纳!