look,there different public signs----------.1,mean different things.mean为什么不加S?

问题描述:

look,there different public signs----------.1,mean different things.mean为什么不加S?

there mean different public sings.mean 作为系语动词在一般时的句型中要与表语的格式一致,当表语是单数时,系语用单数形式;当表语是复数时,系语用复数或原形.mean 是原形,means 则是单数,而并不是加-s就是复数的意思.