* "Saw" is not in the sentence: The sentence you provided does not contain the word "saw."
* "Grown" is an adjective: In this case, "grown" describes the kangaroos, making it an adjective, not a verb.
* "Grown" is incorrect: The correct past tense of "grow" is "grew."
Here are some correct ways to express the sentence:
* She saw grown kangaroos: This sentence uses the verb "saw" and the adjective "grown" correctly.
* She grew kangaroos: This sentence uses the correct past tense of "grow" and implies that she raised kangaroos.
Let me know if you'd like more examples!