help somebody do sth中的do需要用第三人称单数吗?如She often help her mother do/does homework是do 还是 does?

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help somebody do sth中的do需要用第三人称单数吗?如She often help her mother do/does homework是do 还是 does?
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help somebody do sth中的do需要用第三人称单数吗?如She often help her mother do/does homework是do 还是 does?
help somebody do sth中的do需要用第三人称单数吗?
如She often help her mother do/does homework
是do 还是 does?

help somebody do sth中的do需要用第三人称单数吗?如She often help her mother do/does homework是do 还是 does?
不需要,help sb do sth,这是一个固定搭配.

do不用单数

是do。。

第一个动词help 要加s, 变成helps, 第二个do则保持原形。

不需要。这里省略了to