Hello everybody!

Can sbody tell me the differences between: at a certain time
and by a certain time?

Pls, i have to explain it to tho class tomorrow!

"at a certain time" = at one specific time, such as 1:00 p.m., October 13, 2009

"by a certain time" = any time between now and some named time. Another way to say this is at or before 1:00 p.m., October 13, 2009.

Hy!

i almost forgot it! i have to write 2 or 3 example sentences as well. can sbody explain me the meanings of these two a littlebit more detailed?

thx

I don't know how much more detail you want!!

You can look up each term here, though, and you may find more ideas:

http://www.answers.com

Hello! I'd be happy to help you understand the differences between "at a certain time" and "by a certain time."

The phrase "at a certain time" refers to a specific point in time, indicating that something happened or will happen precisely at that particular moment. For example, if you say, "The meeting starts at 9 AM," it means that the meeting will begin exactly at 9 AM, not before or after.

On the other hand, the phrase "by a certain time" refers to a deadline or a specific time limit by which something should be completed or accomplished. It means that the task or objective must be fulfilled on or before the specified time. For instance, if you say, "Please submit your report by Friday," it means that the report should be delivered before Friday ends, allowing any time before the deadline to submit it.

To explain these differences to your class, you can use real-life examples that highlight their meanings. You could provide instances like "I have to catch a train at 3 PM," emphasizing the specific moment the train departs, and "You must finish your homework by 5 PM," stressing the deadline of completion.

Remember, "at a certain time" refers to a specific moment, while "by a certain time" provides a deadline for completion.