Jackon is a talented boy,he's often heard ( ) the violin.A.to play B.playing C.play D.plays
问题描述：
Jackon is a talented boy,he's often heard ( ) the violin.A.to play B.playing C.play D.plays
Jackon is a talented boy,he's often heard ( ) the violin.A.to play B.playing C.play D.plays
答
A
感官动词或使役动词使用省略to的动词不定式,主动语态中不带“to”,但变为被动语态时,须加上“to”.例：make somebody do something→somebody+ be +made to do something