he was singing ()(和……同时)he was walking along the bank of the river

he was singing ()(和……同时)he was walking along the bank of the river -----he was walking down the road,he was singing a song.A.when B.until C.As D.That he was heard singing=he was heard to sing?dictionary tells us like this,I don't know why group singing 和 singing group the singer told the rich woman that he ___already___downstairsA has …sung B had…sung C did…sing D was…singing the singer told the rich woman that he ___already___downstairs.A has …sung B had…sung C did…sing D was…singing选哪个?为什么? I heard he was singing in the next room.是什么从句? 句子翻译:Now he was singing for the very first time! he heard that a little girl was singing by the river 改为简单句 He _______ when the teacher came in.A sang B was singing C will sing He _______ when the teacher came in.A was singing B sang C will sing Eric has been singing since he was 8 years old改为同义句 Eric has been singing since he was 8 years old改为同一句 he was at peace listening to the birds singing early in the morning He was very a__ with the man upstairs and began to shout stop singing 分词作宾补和宾语从句区别?例如:I found him singing the song.和宾语从句I found he was singing the song.是不是都成立?那对于 象 the tiger等这种无宾格的词,I found the tiger running outside和I found the tiger was runni He asked me if I often heard Jenny ___________ pop spngs in the next room.A) sing B) to sing C) singing D) was singing选什么?为什么? He asked me if I often heard Jenny ________ pop songs in the next room.A. sing B. to singC. singing D. was singing知道选A,为什么