All

FormExample
all + plural countableAll students must register.
all + uncountableShe drank all the water.
all of the + nounAll of the answers were correct.
all of + pronounAll of us agreed.
all vs whole: "All the day" is NOT correct — use "the whole day" or "all day": ✓ "I waited all day." ✓ "I waited the whole day." ✗ "I waited all the day."

Both — for exactly two

FormExample
both + plural nounBoth films were excellent.
both of the + nounBoth of the options are good.
both of + pronounBoth of us want to go.
bothand … (correlative)She speaks both French and Spanish.

Every and Each — singular meaning

WordFocusExample
every Group as a whole (all members). Used with time expressions. Every student must attend. · I go to the gym every day.
each Individual members one by one. More formal. Can be pronoun. Each person gets a different number. · Each of the rooms has a balcony.
every/each → singular verb: Both every and each use a singular verb: ✓ "Every student is here." ✓ "Each player has a number." ✗ "Every students are here."

Word order: all / both with pronouns

When the subject is a pronoun, all and both come after the pronoun (not before it).

CorrectWrong
We all agreed.✗ All we agreed.
They both passed.✗ Both they passed.
You all need to sign.✗ All you need to sign.

Exercises

Choose the correct word.

1. ___ the students in the class passed the exam. (= the whole group)

2. She has two brothers. ___ of them live abroad.

3. I brush my teeth ___ morning. (= regularly, each day)

4. We ___ wanted to go, so we booked the trip. (pronoun + all)

5. ___ player received a medal after the tournament.