On / every weekend

HI,

I don't think that you can use by weekend, in my opinion it doesn't sound right/natural.

She cleans up the house every weekend/on weekends is ok

1. Before the weekend

2. What Alex said in his post (also at weekends in BrE)

Hi guys,

She will clean up the living room by the weekend. This means she will do it not later than the weekend.



Here's another example.

I'll call you by 3pm tomorrow. I'll call you. I might call you before 3pm, or I might call at 3pm. I won't call later than 3 pm.



Clive

Thanks, Clive. I've already heard by the end of the weekend/week and similar but wasn't sure if by the weekend is natural.

Me as well, thanks for your correction Clive

Hi. What is the difference?

You wrote:

She cleans up the house every weekend/on weekends is ok

And this?

With the context given, there is no difference in meaning.

Thanks, can I say,

She cleans the house on weekends.

She cleans the floor / cleans up the floor every weekends.

P/s: are they same in meaning? "clean / clean up"?

She cleans the house on weekends. (ok)

She cleans the floor / cleans up the floor every weekends. (wrong; you should use a singular noun with every; every weekend)

Clean up means to make clean/tidy whereas clean refers to an act of cleaning. They're often not interchangeable but here there's little difference except that clean up focus more on a sense of completion, I think.