What does it mean to vary sentence structure?

Varied Sentence Structure. Sentence structure is how you arrange your words, phrases, and clauses in a sentence. Writers who don’t vary their sentences repeat the same sentence subject, length, and type. This repetition bores the reader, and it weakens your voice. Varied sentences give your writing life.

Varied sentence structure, which is changing how you build your sentences, can give the reader the right perception or create interesting thoughts and ideas. On the other hand, repeated sentence structure can make writing monotonous, confusing or just plain boring.

Explanation:

The sentences have a variety of structures – e.g. “She turned her head and met his eyes” is a compound sentence with two coordinate clauses (the sentence could be broken into two sentences at the “and”).