YOU SAID:
I surfed at the beach last night with my friends
INTO JAPANESE
昨夜友達とビーチでサーフィンをしました
BACK INTO ENGLISH
I surfed the beach with my friends last night
INTO JAPANESE
昨夜友達とビーチサーフィンをしました
BACK INTO ENGLISH
I surfed the beach with my friends last night
You've done this before, haven't you.