Use 'until' to talk about an action that continues before a certain time or event. The action stops when the time or event happens.
I will wait until you arrive.
She worked until six o’clock.
'Until' joins two parts of a sentence and tells the time when the first action continues. The first action goes on before the second starts.
Wait until he comes home.
Don’t stop until you finish.
'Until' as an adverb means 'up to that time.' It shows when something was true or happened, often at the end of a sentence.
I did not know until yesterday.
She stayed silent until later.
When 'until' is used in negative sentences, it shows that an action or event does not happen before a certain time or event.
He didn’t leave until the morning.
We can’t start until you come.
'Til is used in informal English as a shortened way to say 'until'. It means the same but is more casual, often in spoken language.
Stay here ’til I get back.
Wait ’til noon for me.
'Until' can be used to show continuing effort or existence before a limit in time or an event, often in a strong or emotional way.
I will fight until the end.
They held on until the last moment.
When giving instructions, 'until' shows the point in time or condition when an action should stop.
Drink milk until the cup is full.
Read until the timer rings.
