I often saw him dance in the park in the evening.为什么是用dance,而不是用dancing呢?

I often saw him dance in the park in the evening.为什么是用dance,而不是用dancing呢? this is the man_____last nightAwhom I saw him Bwho I saw Cwhich I saw Dwho I saw him i saw him ____(walk)into the I saw him go out just now. I saw him ____ into that room. I saw him in the street是什么意思 I saw him go 什么 the classroom I saw him dancing.改为被动语态 i saw him yesterday改为否定句 I never saw him again翻译 1When I came in,I saw him-[lie]in bed.2We can often see cats-[lie]around.3把他视作朋友【英译】 I saw him go out.为什么不能写I saw him went out I saw him yesterday afternoon=I saw him in the afternoon yesterday吗 I saw him before going home.的同义句I saw him ___ ___ ___home. 英语将下列句子变成被动语态1.I saw him go into the classroom2. Who often takes care of the old granny? 改为被动语态：I saw him go into the classrom.2did he buy you the book you wantedwho often takes care of the old granny I often write to him.和I write often to him.和I write to him often.有什么区别 I saw saw saw