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BBC英语一分钟: By 和 Until的用法区别

By vs Until

By 和 Until二则之间的用法区别。

Hi guys! This is Kee from BBC Learning English, and today I'm going to tell you the differences between until and by.

大家好!我是BBC英语学习频道的基,今天我们来学学until和by之间的区别。

We use until to talk about doing something up to a certain point in time. If I say: I have to take care of my dog until 5pm, it means I will start taking care of my dog now and stop taking care of it at 5pm.

until用于表示做某事直到特定时间。如果我说:我5点前都得照看我的狗。也就是说我从现在开始直到下午5点都要照看我的狗。

On the other hand, we use by to talk about doing something before a future time or deadline. If I say: I have to finish an essay by 5pm, it means I can start any time but I will make sure that at 5pm I have finished writing the essay. So, I may even finish it at 3pm or any time before 5.

另一方面,by用于表示在未来某个时间或截止时间之前要完成某事。如果我说:我必须在下午点前写完文章。这句话意思是不管我从什么时候开始,但是下午5点前必须写完文章。也就是说我可以在下午3点写完或5点前任意时间写完。

So we use until to describe doing something up to a certain point in time and we use by to describe doing something before a future time or deadline.

所以,until用于表示做某事直到特定时间,by用于表示在未来某个时间或截止时间之前要完成某事。

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