his sister left home in 1998,and _____ since.为什么用has not been heard of 而不是has not heard of
问题描述:
his sister left home in 1998,and _____ since.
为什么用has not been heard of 而不是has not heard of
答
被动语态,has not been heard of 表示从那时就没人听到她的消息了
答
被动语态啊
答
被动语态,hear of sb---被动,sb be heard of