一、on the top of the mountain 还是mountains?On the Top of the mountain而不能用mountains。意思是在山顶。指的是一座山的山顶。所以是on the Top of the mountain。不能用复数形式。 On the Top of强调的是顶 ...
一、independent短语?be independent of 独立于…之外,不依赖于…的,不受…的支配,超乎,脱离,与…无关be independent of control 不受控制be independent of each other 彼此无关二、remain keep stay区别?①remai ...