I saw him dancedance为什么不加d?

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I saw him dancedance为什么不加d?
I saw him dance
dance为什么不加d?

I saw him dancedance为什么不加d?
see sb.do/ doing 结构
这个句子saw 已经是过去式了,由结构 see sb.do 决定用动词原形 dance
不明白的再问哟,请及时采纳,多谢!

see sb. do sth.----I saw him dance.
see sb doing sth.----I saw him dancing.
这是两个基本用法，所以动词不要加-ed.

应该是I saw him dancing。 一个句子不能出现两个动词。

see sb. do sth.后接动词原形。跟let，make，get的用法差不多。

see sb do 所以用原型
如果要用danced就要把后面变成从句，所以him改成he 变成 i saw he danced

see sb do sth 看见某人做了某事
或者see sb doing sth 看见某人正在做某事

See是感官动词，后面加动词原形
See sb do sth

语法是see sb. do sth.或者see sb. doing sth.

原因很简单：see somebody do 和 see somebody doing两个结构，不用其他

可以用dancing，这里的dance前面省去了to，

I saw him dancedance为什么不加d? 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 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. I saw saw saw i saw him walk into the next room被动语态 I saw him yesterday afternoonA playing soccerB play soccer I saw him reading/read just now为什么? I saw him ___ just now.填leave还是left