Student or Learner
(1a) You write five letters, two poems and three songs to me every month.
(1b) You write to me five letters, two poems and three songs every month.
(2a) You describe to me how fast you can run and how far you can jump.
(2b) You describe how fast you can run and how far you can jump to me.
My friends are arguing with me that the sentences are all grammatically correct. I say that (1b) and (2b) do not sound natural. If they do not sound natural, they are not grammatically correct.
Do you think that (1b) and (2b) are wrong? Thanks very much.
They are indeed all grammatically correct, and you are right that 1b and 2b do not sound natural.
A sentence can be grammatically correct without sounding natural, or even meaningful.
'A purple shark tip-toed thoughtfully through the wicked knitting needle' is grammatically correct.