He has a ping pong ball改为复数句是主语改复数还是宾语改复数
问题描述：
He has a ping pong ball改为复数句
是主语改复数还是宾语改复数
答
He has ping pong balls
答
he has some ping pang balls
答
He has ping pong balls.
答
They have some/many ping pang balls.
原则上是所有词都要改复数的。
所以he--they
has--have
a--some/many
ball--balls
答
They have some pin pong balls.
he - they
has - have
a - some
pin pong ball - pin pong balls
请注意：改复数句时,主语、宾语和谓语一起都要改动的.
改复数句是将句子所有能变复数单数词变复数.