difference有复数吗
make difference是什么意思?如果有复数difference用加s吗?
make some differences,这里的difference要变复数吗?
difference 的复数是什么形式?
the difference between中的difference什么时候为复数形式?
tell the difference between A and B .那个不同要加复数吗
difference在什么情况下可用复数?
make no difference为什么不用复数
home有复数吗
country有复数吗?
equipment有复数吗?
meat有复数吗
baby 有复数吗/