Can you please tell me if the below sentence is grammaticaly correct? This is what I said to a friend of mine after he had been released from the hospital.
" I did not know you had been in the hospital. I am really sorry I did not visit you.'
This sentence has just occured to me, which is something I have been wanting to ask but I keep forgeting.
If you did not know that they were brothers, you would never be able to distinguish them.
I am still new to English, so I desperately need help clarifying some of parts of English language.
Thank you so much for your time and help.