原级: This house is very big. No.1 picture is beautiful. Tom is very tall. Jack gets up early every morning.
比较级: That house is more bigger than this one. No.2 picture is more beautiful than No.1. Sunny is taller than Tom_ Jack's father gets up earlier every morning.
最高级; The house on the hill is the biggest one. No.3 picture is the most beautiful one. Mike is the tallest. Jack's mother gets up the earliest every morning.