Final answer:
Appositive phrases add clarifying information to a noun, and a clear sentence structure is essential for effective communication. The appositive in the dance recital sentence clarifies which instructor is presenting the tutu. Sentence revisions can remove confusion, improve flow, and properly convey meaning.
Step-by-step explanation:
Understanding Appositive Phrases and Sentence Structure
Appositive phrases provide explanatory or clarifying information about a noun in a sentence. In the provided sentence, 'our instructor, Mrs. Jackson, presented Megan Parker with a yellow tutu', the phrase 'Mrs. Jackson' is an appositive that clarifies which instructor is being referred to. This is important in the context since there are multiple instructors. However, if there was only one instructor, the appositive would be nonessential.
Having a clear sentence structure is important to convey the correct information. Mixed sentences can be confusing due to improper syntax or the inclusion of unnecessary words. The sentence, 'Learning to ballroom dance it has shown increased agility, and you live longer', is an example of a mixed sentence.
The issues here are the improper placement of the pronoun 'it' and the change in subject. A clear revision could be: 'Ballroom dancing has been shown to increase agility and lengthen the lifespan', which eliminates confusion and improves sentence flow.
To sum up, it is essential to use appositive phrases correctly and ensure that sentence structure is coherent to effectively communicate meaning. Certain formatting, like the use of dashes, can add emphasis or clarity to a sentence when enclosing an appositive phrase, especially one that includes commas.