When I was watching TV,my brother did his homework.主句为什么用过去时,而 不用过去进行时?

可以是When I was eating ,my brother was watching The phone rang when Iwas watching TV.对when I was watching TV.提问 翻译：I was watching TV when the alien landed . When/While it began to rain ,I was watching TV 英语翻译I was watching TV when ___ ___ ____. Were you watching TV when I called you还是when i was calling you?为什么? i was watching tv when i heard the door(knocking)i was watching tv when i heard someone(knocked)at the door两个knock形式对吗? I heard the noise when i was watching TV(划线部分提问)when i was watching TV划线._______ ________ you ______ the noise? She was watching TV when I came in.为什么不用was coming? He was watching TV when i was washing clothes. 这句话哪错了,为什么? When i entered the room,i found the boy_______TV a.watching b.was watching.怎么选为什么. I was watching TV when he came into the room——（轻轻地） He was watching TV when I came in.（同义句） I was watching TV when he ＿＿ ＿＿ ＿＿ （出去） the house. When I came back home,my father was watching TV yesterday 为什么watch要加ing? I was watching TV _______ the telephone rang.A until B when C after I was watching TV _______ the telephone rang.A when B until C after 动词填空I was watching TV when you _____(phone) me yesterday evening.