help to do sth 幫忙做某事

do sth to help 做某事（以達(dá)到）幫忙（的目的）

例：
I often help to do some housework at home. 我經(jīng)常在家?guī)兔ψ鲂┘覄?wù).

Let's do something to help the poor people. 讓我們做些事來幫助那些窮人 .