This a tutorial based lecture focus on Subject or Verb Agreement. Subjects and verbs must Agree with one another in number (singular or plural). Thus, if a subject is singular, its verb must also be singular; if a subject is plural, its verb must also be plural. A subject will come before a phrase beginning with of. This is a key rule for understanding subjects. The word of is the culprit in many, perhaps most, subject-verb mistakes. Incorrect: A bouquet of yellow roses lend color and fragrance to the room. Correct: A bouquet of yellow roses lends . . . (bouquet lends, not roses lend).