1.suggest doing sth. 建议做某事没有suggest sb to do sth.可以改用advise sb. to do sth.一般也不说 suggest sb doing 但可以用suggest sb's doing，相当于动名词的复合结构，即等价于 suggest doing sth.和suggest (that) sb. (should) do sth.2.set out: 开始、规划、出发后面加to do sth. 也可直接加名词3.一般情况下不定式表示未做的事情，而动名词表示已经做过的事情。 如：stop to do/ stop doing 意思有变化。但consider做考虑的意思讲时，后面只能跟...
