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

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Jackonisatalentedboy,he''softenheard()theviolin.A.toplayB.playingC.playD.playsJackonisatalentedboy,he

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
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

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
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

A
be heard to do 经常被听到做某事,be heard doing 被听到正在做某事。