He was ____(luck) that he fell off the bike yesterday.是unlucky还是unluckily?为什么
问题描述：
He was ____(luck) that he fell off the bike yesterday.
是unlucky还是unluckily?为什么
答
你好,很高兴能够在这里回答你的问题,填写
要填写unlucky.
因为is后面只能用形容词,为主系表结构
不能跟副词