What is a complete subject?
simple subject + modifiers
A complete subject is the simple subject,the main word or words in a subject, along with any of the modifiers that describe the subject.
To identify the (complete) subject, ask yourself who or what completed the action in the sentence.
When defining a complete subject, remember to include both the simple subject plus all of the words that modify it.
1. The school orchestra is performing tonight.
Who is performing tonight? The school orchestra is performing tonight. The school orchestra is the complete subject.
2.My friend, Sarah, is a great singer.
Who is a great singer? My friend, Sarah, is a great singer. My friend, Sarah, is the complete subject.