[Grammar] by/until

[persianfriend71]

Hi. What's the difference between these sentences? Which one is correct?
1. I will finish my homework until 5.
2. I Will finish my homework by 5.

 

[teechar]

#1 is wrong. Do you know what "until" means? Can you give us a typical sentence using "until" and explain it?

#2 means you will finish the homework at or before 5.

 

[GoesStation]

Number two has a capitalization error but is otherwise correct.

 

[Yankee]

#1. With "until", it should be "I won't finish.....".

 

[tedmc]

Small numbers should be written in words.

 

[emsr2d2]

Small numbers should be written in words.

That's generally true, but with times it's more natural to use the number and then use "am" or "pm". If it's a casual message and the reader already knows whether you're talking about morning or afternoon, I don't have a problem with just using "5".

 

[tedmc]

Everybody knows that using figures to write the time has been the norm, e.g. 5 o'clock or 5.00 pm.

But with writing a figure alone as in "finish homework at 5" in a narrative looks a bit odd to me.

 

[Rover_KE]

Everybody knows that using figures to write the time [STRIKE]has been[/STRIKE] is the norm: e.g. 5 o'clock or 5.00 pm.

But [STRIKE]with[/STRIKE] writing a figure alone as in "finish homework at 5" in a narrative looks a bit odd to me.

Native English-speakers are used to it.