he was watching tv when his mother come back home用i don't kn

he was watching tv when his mother come back home用i don't kn 句型转换 1 He was watching TV when his mother came back home fro He was watching TV when his mother came home.对watching TV做提问 he was watching TV when his mother cane back的同义句 I don't know when he _(come)back.when he _(come)back,I will When I came back home,my father was watching TV yesterday 为什 My mother asks( )I will come back home for dinner.用if,when,t I don't know when he ＿（come）back. My brother was watching TV when my mother came back（用while改写 Richard lived with his mother when he was young.Hw didn't kn (改为同义句)Tom stopped watching TV when his mother came back fro When I was watching TV,my brother did his homework.主句为什么用过去时