I saw him going upstairs.为什么前面用过去式SAW,后面用going.如果我想写,当他见到我们俩

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/09/20 23:29:54

I saw him going upstairs.为什么前面用过去式SAW,后面用going.如果我想写,当他见到我们俩人走了的时候
如果我想这样写：当他见到我们夫妻俩走了的时候,他马上哭了,笑得很伤心.我们又下车来安慰儿子,告诉他,在学校里面能够认识很多新朋友,新同学.加油,儿子很棒.放学的时候,爸爸妈妈再来接你.
读书,这是儿子成长中重要的一步.看着儿子小小的背影,心里面百感交集,无法形容.

saw 过去式表示看到他上楼梯发生在过去
going 现在进行时
两句合并就是过去进行时
过去进行时主要表示过去某一时刻正在进行的动作,或表示过去某一阶段一直在进行的动作.如：
I was having a talk with Li Hua at that time. 那时,我正在跟李华谈话.
I was watching TV at home last night. 昨晚我一直在看电视.
翻译：He is smiled sadly when he saw we were leaving. Then, we got off the car and to comfort my son by telling him a lot friends can be make in school. "Cheer up, you are great. We going to fetch you after class finished". I said
Reading is the most important step for our child. sight of his back, i feel complicated, hardly to describ.

I saw him before going home.的同义句I saw him ___ ___ ___home. （） Yesterday I saw her going _____ upstairs when I passed t 英语时态的运用I saw a girl throw herself on him 这里saw是用了see的过去式那为什么 I saw her going across the street 这样写对吗? I saw he coming in .see为什么用过去式啊 I saw him go out.为什么不能写I saw him went out I saw him ____ into the small store.A went B going C to go D I saw him into the bedroom one hour ago a.go b.going c.to go I saw a boy fall off a bike,这句话saw用了过去式,为什么fall不用? I saw him go out of the room.(第二个动词go为什么不用过去式..谢) I saw him dance 自从我上次见到他以来，他长胖了。 He has ___ ___ ___ since I saw him last tim