not as…as的用法（比较级）如：The moon is smaller than earth.用not as…as:the moon is not as big as the earth.这种比较级的用法怎么用

not as…as的用法（比较级）如：The moon is smaller than earth.用not as…as:the moon is not as big as the earth.这种比较级的用法怎么用
not as…as的用法（比较级）
如：The moon is smaller than earth.
用not as…as:the moon is not as big as the earth.
这种比较级的用法怎么用

not as…as的用法（比较级）如：The moon is smaller than earth.用not as…as:the moon is not as big as the earth.这种比较级的用法怎么用
n. + as + adj. + as 指 sth和sth一样……
加上not就只不一样呗
所以...就是之间的不同呗