8.5cease doing/to do-特别词精讲
8.5 cease doing/to do
cease to do永劫候，乃至永久停做某事，cease doing短时防止做某事，今后还会接着做。例如：
That department has ceased to exist forever.
谁人系已不复存在。
The girls ceased chatting for a moment when
their teacher passed by.密斯们在西席走逾期，停了会聊天。

关键字：regret to do doing to do to doing try doing to do mean doing to do 特别疑问词 to do