computer的复数形式
Playing computer games .后面的动词用单数还是复数
computer.pear.tower.field.church.packet.bridge这些可数名词的复数形式
computer games是单数还是复数
She has a computer.(改为复数句)
computer games用单数还是复数
on computer ,on the computer,in computer 的区别
把Where is her computer?改为复数句
There is a computer game on the desk 改为复数
Does he have a computer?变成复数句子
Is that your computer.怎么复数形式急!
computer playing与 playing computer的区别