Days of the Week - Plurals & use of "on"

[losilmer]

Please analyze the following sentences:
1.- I began to work on last Tuesday.
2.- On Mondays I work only in the mornings.
From Tuesdays to Fridays, in the mornings I work from 9 to 12.
3.- On Saturdays I only work in the mornings.
4.- In this schedule I never work on Saturday afternoons.
What is wrong. Must we use "on" always with days of the week?
My opinion is that above sentences are correct, but I am not at all sure.
Please, help me out.

 

[Dimcl]

Please analyze the following sentences:
1.- I began to work on last Tuesday.
2.- On Mondays I work only in the mornings.
From Tuesdays to Fridays, in the mornings I work from 9 to 12.
3.- On Saturdays I only work in the mornings.
4.- In this schedule I never work on Saturday afternoons.
What is wrong. Must we use "on" always with days of the week?
My opinion is that above sentences are correct, but I am not at all sure.
Please, help me out.

I've indicated that only the first sentence is incorrect but that's because the language in sentences 2. through 4. is correct although quite unidiomatic.

We would not use "on" in sentence 1.

We would also not pluralize the mornings, afternoons, days, etc. For example, I would say:

"On Saturdays I only work in the morning" (not "in the mornings", as you have done). The same goes for "On Mondays, I only work in the morning" (not "mornings").

This sentence ("From Tuesdays to Fridays, in the mornings I work from 9 to 12") desperately needs restructuring. Native-English-speakers would much more naturally say "From Tuesday to Friday, I work from 9 to 12 in the morning". Note that I have removed the plural reference from the days of the week as well.

You will hear people say "Saturdays, I only work in the morning" but this is simply informal. Properly, it would be "On Saturdays..."

 

[losilmer]

Thanks, Dimcl. This clarifies me this issue.

 

[Dimcl]

Thanks, Dimcl. This clarifies me this issue for me.

You're welcome.