until的用法

题目

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

答案

你这里还是用楼上的翻译较好,但没有必要用just: I'm watching TV before I find something to do.
Until较为正式,且用于句首较多.
请看下面的具体应用,供参考：
until
1. 连词 up to the time when 直到...时（为止）:
* Wait until the rain stops. 等到雨停了再说吧.
* Don't leave till I arrive. 我不来你不要离开.
* Continue in this direction until you see a sign. 一直朝著这个方向走就看见指示牌了.
* Until she spoke I hadn't realized she was foreign. 她要不说话我还一直不知道她是外国人.
* I won't stop shouting until you let me go. 你不放我走我就一直喊叫.
* No names are being released until (ie before) the relatives have been told. 只有在通知这些人的亲属以后才可透露其姓名.
until (also till) 介词
(a) up to (a specified time) 直到（某一时刻）:
* wait until tomorrow 等到明天
* It maylast till Friday. 这可能要延续到星期五.
* Nothing happeneduntil (ie before) 5 o'clock. 五点钟以前没有出现任何迹象.
* The street is full of traffic from morning till night. 这条街从早到晚行人车辆很多.
* Until now I have always lived alone. 我一直独自生活至今.
* I'd like to stay here up until Christmas. 我想在这儿呆到圣诞节.
(b) up to the time of (a specified event) 直到（发生某事）:
* The secret was never told until after the old man's death. 这个秘密在老人去世后才说出来.
* Don't open it till your birthday. 等到你过生日那天再打开.
* She was a bank clerk until the war, when she trained as a nurse. 她战前是个银行职员, 战时受训当了护士.