both. . .and. . . “两者都”。

Mrs. Cox is both kind and gentle to her pupils.

考克斯太太对她的学生既和蔼又可亲。

Exercise is good both for body and for mind.

运动对身心都有益处。

请注意

both. . .and. . . 的否定句表示部分否定。

He can't play both the violin and the piano.

他或会拉小提琴或者会弹钢琴。 (不全会）

＝He can either play the violin or play the piano.