二、分词、不定式作宾语补足语的用法要点 1.感官动词或短语see，watch，observe，look at，hear，listen to，notice等。 I heard her sing an English song just now. 刚才我听见她唱了一首英文歌。(主动；完成) I heard her singing an English song when I passed by her room yesterday. 昨天经过她房间时，我听见她正在唱英文歌。(主动；正在进行) 2.使役动词let后加复合宾语。 Don’t let your child play with matches. 别让你的孩子玩火柴。