A noun is a word that names a person, a place, a thing, or an idea. One way that we use the noun in writing is as the subject of a sentence. The subject is the thing that the sentence is about.
Here are examples of a noun as the subject of a sentence:
Bob is a teacher. The sentence is about Bob.
My dog ran away. The sentence is about dog.
Winter seems especially harsh this year. The sentence is about winter.
Use a noun as the subject of a sentence.
It’s your turn. Find the subject of this sentence. Remember, it will be a noun. The train pulled into the station. Did you figure out that the word train is the subject? Good for you!