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问题: 语法问题.关于keep 的几个词组

keep off
keep up with
keep out

解答:

1. keep off ,
远离, 不靠近 ,避开。 The notice said Keep off the grass'. (from )
布告牌上写著`勿踏草地'.
Keep off the premises.
请勿入内。
2.keep up with ,动词 ,跟上,跟进,持续联系
,our knowledge should 跟上the need of the modern time.
你我的知识要跟上时代的需要。
How many of your childish friends ,do you keep up with?
你和小时的同学 有多少 保持联系的?
She likes to keep up with the latest fashions.
她喜欢穿戴入时.
3 。不许,阻止 ,以防止
keep out from the snowstorm..
the thick jacket was not enough to keep out the cold.
  hen厚的夹克也不足以御寒。




参考文献:xin sina dictionary