mean to do想要(做某事) VS mean doing 意味(做某事)
propose todo打算( 做某事) VS propose doing建议(做某事)
orget to do忘记( 要做得事) VS forget doing忘记(已做得事)
remembertodo记得(要做某事)VSrememberdoing记得(做过)
goontodo继而(做另- -件事) vS go on doing继续( 做原来得事)
stop todo停下来去做另- -件事VS stop doing停止正在做得事
regret to do (对将要做得事)遗憾VS regret doing (对已做过得事)后悔