both有三种词性:形容词、副词、连接词,都表示两个都、即……又……、而且的意思,所以在使用both时句子中被形容的名词应该使用复数形式,如Both his eyes were seriously burned.他的双眼都被严重烧伤了。
Both of us thought so.
我们俩都这样想的。
My brother and my sister both ran to help me.
我弟弟和我妹妹都跑来帮助我。
Both of them like popular songs.
他们两人都喜欢流行歌曲。
Both her children go to the same school.
她的两个孩子在同一个学校读书。