An elephant is bigger than a tiger(改为同义句,并说明知识点,

An elephant is bigger than a tiger(改为同义句,并说明知识点,
An elephant is bigger than a tiger
(改为同义句,并说明知识点,

An elephant is bigger than a tiger(改为同义句,并说明知识点,
An elephant is bigger than a tiger
A tiger is not as/so big as an elephant.
A tiger is smaller than an elephant.也行.
比较级用法.

A tiger is smaller than an elephant.
Compared with a tiger, an elephant is bigger.
A tiger is not as/so big as an elephant.
比较级用法。