by vs until

4/13/2018 7:43:29 AM
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by vs until

 

By / Until

Until tells us how long a situation continues. If something happens until a particular time, you stop doing it at that time.

They lived in a small house until September 2003. 
(They stopped living there in September.)


Use by for one specific event that will happen before a certain time in the future. Use until for a continuous event that will continue and then stop at a certain time in the future.

Please send me the information by Monday.
He’s staying in London until the 30th.

4/13/2018 7:48:49 AM
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Re: by vs until

use by when asking questions.

For example:

Will the details be available by December?
(This asks if they will be ready no later than December.)