问个初中英语语法问题!谢谢

来源：百度知道 编辑：UC知道 时间：2024/05/17 05:50:10
像watch/help/let…sb+do sth 的结构
如果sb是单三，那么do是否要变does呢？
比如像 Gary often helps Lily ___(do) her homework.
I watched Gary ___(sing) in the room 10 weeks ago.
I let her ___ (go).
谢谢
谢谢大家参与

不用

如果语法中watch/help/let…sb+do sth 的结构不管主语是什么就直接用动词原形就可以了

help sb (to) do sth
Gary often helps Lily (to)do her homework.

watch sb do sth
或者watch sb doing sth
如果是看到某人做过什么市，就用watch sb do sth
如果是看到某人正在做什么事，就用watch sb doing sth

I watched Gary sing in the room 10 weeks ago.
10天前，我看到她唱过歌。

let sb do sth
I let her go.

词组：help sb. do sth
所以用原形啦．
因为watch是看着人家做，并不是自己动手，所以也用原形．
let么是使让动词，也用原形

不用变,还是用do 固定搭配
Gary often helps Lily do her homework.
I watched Gary sing in the room 10 weeks ago.
I let her go