PARTS OF SENTENCE: SUBJECT AND PREDICATE

The subject simply refers to the doer of the action or to what (or whom) the sentence is all about.
It can be in the form of a noun or a pronoun or noun phrase and is usually (but not always) located before the predicate.
For example:

John walked down the street. (noun)
They went to college. (pronoun)
The black dog is sleeping. (noun phrase)

SIMPLE SUBJECT:
1. A simple subject is just one word, without any modifiers, usually a noun or pronoun.
2. Example:

Emil is a tall boy.

2. COMPLETE SUBJECT:

- A complete subject is (main noun or pronoun) + other words that modify the subject.
- Example:

James's road bike is much faster than his mountain bike.

3. COMPOUND SUBJECT:

- A Compound subject is multiple subjects (including the words that modify them).
- Example:

 Tom and Ben became friends.

A sentence or clause that says something about the subject.
It tells what the subject does with an action verb or describes the subject using a linking verb and a complement.
Example:

Kelly walked down the street.

Predicates can contain a good deal of information and may be a long part of the sentence.
Predicates often have several parts in addition to the verb, including objects and complements.
Predicate is again divided into three categories

1. SIMPLE PREDICATE:

A simple predicate is the main verb in the predicate that tells what the subject does.
It doesn’t give any more information about the verb or verb phrase that is why it is known as Simple predicate.
Example:

 The baby is taking a nap.

2. COMPLETE PREDICATE:

The main verb + other words that modify the verb.
A complete predicate includes not only the verb or verb phrase but also all the words that give more information about it.
Example:

 The singer finished her last song.
 The new book is easy to read.

3. COMPOUND PREDICATE:

My sisters were going to go to the beach but decided to stay home instead.
Tina finished her project and went to the science fair.