until的用法

　　连词　conj. 直到…为止

　　· I'll wait until he arrives and then I'll 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.

　　· Let's 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 shan't do that until you come back.

　　在你回来之前,我不会干那件事.

　　· We won't 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 can't 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 father's death, she had always lived in London.

　　在她父亲去世之前,她一直住在伦敦.