While the verb to have has many different meanings, its primary meaning is “to possess, own, hold for use, or contain.” Have and has indicate possession in the present tense (describing events that are currently happening). Have is used with the pronouns I, you, we, and they, while has is used with he, she, and it.
HAS is used with singular or plural?
You'll notice that the only subject you should use "has" with is third person singular (he has, she has, it has). You should use "have" everywhere else. The subject "Al and Sue" is third person plural (the same as "they"), so use "have."
When to use has been with examples?
If the subject of the sentence is He – She – It or a singular noun (car, bird, child) we use 'has been'. Examples: ☛My car has been stolen from the city center. ☛This bird has been following me all day long.