Let's help our mother______the house.

问题描述:

Let's help our mother______the house.

clean那为什么用clean,不用cleans或cleaning?help sb 后面跟不定式时,可以带to,也可以省去to,但不能用cleans 或其它形式,即help sb (to) do sth 【俊狼猎英】团队为您解答。祝你进步。