关于until的用法
Until用法：表示“直到……为止”,两者常可换用,只是 until 比 till稍正式,所以在正式文体中,一般用 until,而在口语或非正式文体中则两者都可用.从其后所接成分来看,till多与名词或较短的从句连用,而较长较复杂的成分多用 until,位于句首时也多用 until.接下来就由小编带来以下内容，希望对你有所帮助！
连词 conj. 直到…为止
up to the time when
· Ill wait until he arrives and then Ill leave.
我要等他来以后再离开.
· Go straight on untill you come to a large red building.
一直往前,走到一幢高大的红色建筑物为止.
· Lets wait until the rain stops.
咱们等雨停吧.
· The teacher kept on asking the students questions until the bell rang.
老师反复向学生提问,直到下课铃响.
连词 conj. (在否定句中)在…之前
in (in negative constructions) before
· I shant do that until you come back.
在你回来之前,我不会干那件事.
· We wont come to any decision until we have had a chance to discuss the problem thoroughly.
我们有机会充分讨论这个问题再决定下来.
· Until you told me I had no idea of it.
在你告诉我之前,我对此一无所知.
介词 prep. 直到…为止
up to a certain time
· It was only a week until Christmas.
离圣诞节只有一个星期了.
· She will stay until Saturday.
她要一直呆到星期六.
介词 prep. 在…之前;不到…(不)
before
· I cant come until tomorrow.
我得明天才能来.
· Not until noon did it stop raining.
直到中午雨才停止.
· Until then, I knew nothing at all about it.
在那以前,我对此一无所知.
· Until her fathers death, she had always lived in London.
在她父亲去世之前,她一直住在伦敦.