Here are two simple ways to say the sentence so a 7-year-old can understand:
- Fishermen from seaside villages go out on fishing boats to catch fish.
Why this is easy: Uses 'seaside' and 'catch fish' which are simple words. - People who live by the sea take fishing boats to find and catch fish.
Why this is easy: Explains 'fishermen' as 'people who live by the sea' and uses simple verbs like 'take' and 'find'.
Choose the one you like best — both mean the same thing!