until 和unless 有何区别i won't play with you unless you give up smoking .until 我觉得都可以,那么说这两个词有什么区别?she wouldn't go out with me again unless i gave up smoking 此处可以用until until 用于否定句时，主

until 和unless 有何区别i won't play with you unless you give up smoking .until 我觉得都可以,那么说这两个词有什么区别?she wouldn't go out with me again unless i gave up smoking 此处可以用until until 用于否定句时，主 unless和until的区别, unless和until的区别He did not work until I asked him to.和He did not work unless I asked him to.有什么区别?第二个句子是不是不对? until和till有何区别? 英语单词until和not until有何区别 until 和unless区别i won't write to him ____he writes to me first.A until B unless为什么不选 until呢 not until 我不写信给他直到他首先写给我 until 和unless到底怎么区别呢 请问up until 和until 有什么区别?Up until I was ten,I climbed treesand swim.这句话中的up until能不能换成until? until和not until有什么区别 until 与unless的区别是什么 if not 和unless有什么区别 unless until if. notunless until if. not 区别用法 until与unless的区别? 例如：You will not pass the exam____you study hard. A. until B. unless有解析的,谢谢! 英语问题,如何区别not...unless...,not...until...和not...before... not until 和unless的区别 我怎么觉得意思都差不多呢 until和before作为连词引导时间状语从句有何区别? not unless和unless的区别 UNTIL 与UNLESS的区别UNLESS做从句 主句是不是要有WILL?UNTIL做从句 主句可以加will吗?我看到的unless做从句的貌似主句都有will. 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