all (➪ We say all day, all night, all month, all year, etc. to mean ‘the entire day/night/month/etc.’ ➪ We don’t use an article or a preposition when we use all

- (We do not use an article before plural or uncountable nouns to talk about something in general.)

both (➪ We use both + plural noun and either/neither + singular noun.)

either ( We can say either A or B to mean one person/thing or the other.)

neither (We say neither of + you/them to mean 'zero out of two people'.)

Every (=All doctors in that hospital are kind, compassionate, and caring.)

a ( We use a/an when we mention something for the first time)

the (With places in a town where we commonly go (the park, the cinema, the doctor, etc.)

both (We use both ... and ... to mean two people or things.)

neither (We use neither … nor … to mention the two things or people that we are talking about.)

a ( We use a/an to talk about people’s jobs or to say what kind of person or thing something/somebody is.)

The (We use the when there’s only one of something.)