Corrected sentence: The summer forest is full of berries.
Great sentence! Here are two small fixes to make it correct:
- Start with a big (capital) letter: "The" should be capitalized.
- Put a period at the end: add a dot (.) to finish the sentence.
That sentence means: in summer the forest has lots of berries.
Other easy ways to say it:
- The forest is full of berries in summer.
- The summer forest is full of tasty berries!