Answer & Explanation:
It could be because (1) they don't understand the concept of the subject to do assignment (2) they don't understand the criteria (3) the teacher makes it too long or hard (4) they don't want to do it.
That way you know what kind of audience your writing for you can use different words with a lot more complexity. its completely different writing for kindergarteners and writing a paper for a college seminar
This is actually false. The basic sentence structure in English is SVO, meaning "Subject, Verb, Object".