1. Subject-Verb Agreement

2. The subject and verb of a sentence should match in number.

3. Singular subjects have singular verbs
Ex: The girl likes cats.

4. Plural subjects have plural verbs.
Ex: The girls like cats

5. Sometimes the subject and verb are separated by a prepositional phrase.
Ex: A small bag of potato chips contains 440 calories.

6. Ignore the prepositional phrase and make sure the subject and verb agree in number
The bag contains 440 calories.

7. A compound subject is made up of two nouns connected by a joining word.

8. Running and lifting weights are good ways to keep in shape.
Fear and ignorance have a lot to do with hatred.

9. Subjects joined by “and” generally take a plural verb.

10. Trick: change the compound subject to “they” and see which verb fits.
Which sounds right?
They have a lot to do with hatred or
They has a lot to do with hatred.