Using By and Until in English

Using By and Until in English, Using by, using until, Difference between by and until;

By

No later than time. Something happens by a time in the future.

Examples

• Please send me the report by Saturday.
• We need to be there by noon.
• He had promised to be back by four o’clock.
• Job applications must be received by the 22th April.
• I sent the documents to them today, so they must receive them by on Friday.

Until

Up to, but not after, a specific time. To say how long a situation continues.

Examples

• I will stay until four o’clock.
• Are you going to work until 11:00?
• Until my father came home, I read a book.
• I could not get up this morning. I stayed in the bed until eleven.
• That’ll just have to wait until next week.
• No dessert until after you finish your dinner.