改同义句.Your brain will work worse unless you practice it.This walkman cost me four hundred yuan
问题描述：
改同义句.Your brain will work worse unless you practice it.This walkman cost me four hundred yuan
答
if you don't practice ，you brainwil work worse.
i paid four hundred yuan for the walkman
答
if you don't practice you brain,it wil work worse.
i paid four hundred yuan for the walkman
答
1.Your brain will work worse unless you practice it.你的大脑除非你联系它,他才会工作改为同义句：Your brain doesn't work worse until you pratice it.2.This walkman cost me four hundred yuan.这个随身听花...