I had a hard time last time i traveled to an English-speaking country, trying to communicate with people, and I wonder if some of the sentences I said sounded stupid for the natives:
1) I had to pay for the shuttle to take me to the airport and i asked to the attendant: "Do I have to pay before?". Should i have said "Do i have to pay in advance?"? yes
2) I was looking for a very specific winter coat and I asked: "Hi, do you have jackets for heavy winter?" "Do you have heavy winter coats?" "Do you have thick winter coats?" [You say "a very specific winter coat" - so perhaps "I am looking for a down-filled winter coat"/"I am looking for a double-weight winter coat"/"I am looking for a vicuna winter coat"]
3) When the guy brought the winter coat W checked the inside and noticed it wasn't the way I wanted. Then, T asked him "Don't you have a jacket with the inside covered with a fabric like...?". "Do you perhaps have one with a padded/fleecy lining?"
4) i wanted to get a film developed and I said "I would like to process the film". Was it too stupid? That says you will do the work. "I would like to have this film processed/developed".
thanks a lot.
Student or Learner