“several thousand students ”中的“thousand"为什么不是复数?
several ______(thousand) dollars thousand要加s吗?several不是加可数名词
有没有many thousand,several thousand,和several thousands of
thousand有复数么
是several thousand还是several thousands of ?
several thousand还是several thousands of
one thousand students和one thousand of students
thousand有没有复数形式?
hundred 百 thousand千 复数
several thousand与 several thousands of 的用法
thousand million billion的复数分别是什么?
thousand再什么情况加复数下
one thousand thousand 是什么意思