 A number of a noun, pronoun,, and a verb does not refer to a specific number. It means only singular or plural.  The subject-verb agreement is very important both in writing and speaking.  The subject and the verb in a sentence must agree in number.

 In grammar, the concept of number is simple. Words can be either singular or plural. I think of the word singular as referring to a single one.  A plural word refers to more than one item or idea.  Only nouns, pronouns, and verbs have number.  Most nouns are made plural by adding –s or – es to the singular form.

 For example, if I read trees in a sentence, I know it is plural because –s has been added to the singular form, tree.  Some nouns have irregular plural forms. The plural form of fish, for example, is fish, and the plural form of loaf is loaves.  If I’m unsure about whether a word is singular or plural, or how to make a word plural, I look it up in a dictionary.

 I will give each of you an index card with a singular or plural noun.  On your index card – write singular or plural and tell why ( Hint: look at the end of the word)  We will share our answers

 Now get with a partner.  Write one sentence with a singular subject.  Write one sentence with a plural subject.  We will share our sentences.