"Grandfather and I are walking together."

Translation: दादा और मैं साथ में चल रहे हैं ।

[_decca_]

Can anyone explain what में is doing here? Thanks if so!

[xspoox]

It's part of " साथ में " which collectively means "together" or "with". Hope that helps.

[_decca_]

It does - thank you!

Have I sometimes seen other constructions of साथ, such as के साथ? How do you decide when to use के साथ versus साथ में ?

Thanks again!

[xspoox]

Using "ke sath" would mean "grandfather is walking with me", as opposed to "sath mein", which means "grandfather and i are walking together".

[_decca_]

That makes perfect sense, you're the best, thanks!

[Ly-Loo]

Why did it accept my answer without में between सथ and चल? Shouldn't it make a difference in the sentence's meaning if I forgot to put it in?

[ragingfire4]

As far as I am aware, it does not actually make a difference in some cases, this being one of them. Sorry I don't really have an explaination for why that is so.

[ph.Muy4Ne]

Is it right to say that Grandfather and I instead Grandfather and Me

[wantobefluent]

Yes https://grammar.yourdictionary.com/style-and-usage/when-to-use-i-or-me-in-a-sentence.html