关于until的用法I sometimes stay in bed until lunchtime和I sometimes do not stay in bed until lunchtime意思有什么区别什么时候用not until ,什么时候只用until

关于until的用法I sometimes stay in bed until lunchtime和I sometimes do not stay in bed until lunchtime意思有什么区别什么时候用not until ,什么时候只用until 关于sometimes的用法…在书上看了个句子：i sometimes stay in bed until lunchtime.能不能换成i stay in bed until lunchtime sometimes.或者sometimes,i stay in bed until lunchtime? sometime和sometimes的区别和用法 until 的用法 not until的用法 not until的用法! not until/until的句型用法. until和not until的用法 sometime sometime的区别 till于until的用法 until的几种用法, until 和till 的用法 until的词性与用法 sometime的问题sometime,sometimes,some time,some times的具体用法 I sometimes stay in bed until lunchtime.为什么sometime要加s I sometimes stay in bed until lunchtime中,为什么在sometime+s呢? i sometime __(still/stay) in bed __(on/until) luntchtime.选择哪一个?为什么? until的用法I’m just watching TV until I find something to do.这句语法对吗请问用until连接的话,时态有什么规定