I helped Tom buy 还是I helped Tom bought

来源:百度知道 编辑:UC知道 时间:2024/09/28 06:47:47
用合适的形式:
I helped Tom ____(buy) a watch.
那 did 后面的动词要改变原形吗?
在过去式里有没什么句子前面动词要改变,后面动词也要改变?

help sb. do sth.

buy

本题答案I helped Tom buy a watch.
因为是help sb (to) do sth

"那 did 后面的动词要改变原形吗?"不懂你的意思

I helped Tom buy a watch. (原型)

She enjoyed the performance that was on yesterday.