8.5 cease doing/to do
?
cease to do  長(zhǎng)時(shí)間,甚至永遠(yuǎn)停做某事。
cease doing  短時(shí)停止做某事,以后還會(huì)接著做。

  That department has ceased to exist forever.
  那個(gè)部門已不復(fù)存在。
  The girls ceased chatting for a moment when their teacher passed by.
  姑娘們?cè)诶蠋熥哌^時(shí),停了會(huì)聊天。