This is the boys's game.哪个单词错了?只有一个错,要怎么改?改为 boys' or boys?

This is the boys's game.哪个单词错了?
只有一个错,要怎么改?
改为 boys' or boys?

boys's错了,应该是boys'

This is boys's game
去掉the

boys' 就行了
复数的所有格不用再加s

boys'
已经是复数了，后面不用再加S了，复数所有格

This is the boys'game.
把s去掉就OK了。