off 的用法最近看到几个off,希望高手帮忙解释off在下面句子中各自的用法,1.I know it off by heart .我知道其中by heart的意思是熟记,但off这里做什么用呢?2.I suppose you’ ll be off to the.to do 3.insurence is compulsory and costly and parking both on and off campus can be a problem.
问题描述：
off 的用法
最近看到几个off,希望高手帮忙解释off在下面句子中各自的用法,
1.I know it off by heart .我知道其中by heart的意思是熟记,但off这里做什么用呢?
2.I suppose you’ ll be off to the.to do
3.insurence is compulsory and costly and parking both on and off campus can be a problem.
答
第一个off, 有“完全”的意思.像drink off,一滴不剩地喝掉.know it off by heart,了然于胸,熟知.
第二个off, 着手,开始.
第三个,校外.on campus, off campus,校内,校外.