請問be heard to do/do/doing之間的區(qū)別以及是否存在be heard do 的說法

英語人氣：760 ℃時間：2020-04-04 07:28:00

優(yōu)質(zhì)解答

1.主動語態(tài)中,hear只能接不帶to的不定式或動名詞作賓語即：
hear sb do sth:I heard her sing that song.我聽見過她唱那首歌.
hear sb doing sth ：I heard her singing that song.我聽見她在唱那首歌.
2.但是,在被動語態(tài)中,又要將不定式前加上to,就以上面兩句為例：
She was heard to sing that song.她被人聽到過唱那首歌.
She was heard singing that song.她正在唱那首歌時被人聽到了.
所以be heard do 是不存在的.