which is the complete subject,simple subject
The two-and-a-half-month-old child received 2nd degree burns across the bridge of his nose.
simple subject is: received 2nd degree burns :complete subject is two-and-a-half-month-old
Oh, my! You are confused!
First, let's find the verb. Which word shows action or tells what happened?
The verb is received.
Now -- we'll find the subject by asking "who or what received?"
Obviously the child received. That's the simple subject.
The complete subject is the simple subject plus its modifiers. Which words describe the child?
"The two-and-a-half-month-old" describes child. The complete subject is The two-and-a-half-month-old child.
The subject and verb form the skeleton of the sentence.
The two-and-a-half-month-old child received