You use every in front of the singular form of a countable noun to show that you are referring to all the members of a group and not just some of them.
She spoke to every person at the party.
I agree with every word Peter says.
This new wealth can be seen in every village.
‘every’ and ‘all’
You can often use every or all with the same meaning. For example, ‘Every student should attend’ means the same as ‘All students should attend’.
However, every is followed by the singular form of a noun, whereas all is followed by the plural form.
Every child is entitled to free education.
All children love to build and explore.
➜ See all
Instead of ‘every’ or ‘all’, you sometimes use each. You use each when you are thinking about the members of a group as individuals.
Each customer has the choice of thirty colours.
Each meal will be served in a different room.
➜ See each
referring back to ‘every’
You usually use a singular pronoun such as he, she, him, or her to refer back to an expression beginning with every.
Every businesswoman would have a secretary if she could.
However, when you are referring back to an expression such as every student or every inhabitant which does not indicate a specific sex, you usually use they or them.
Every employee knew exactly what their job was.
used with expressions of time
You use every to show that something happens at regular intervals.
They met every day.
Every Monday there is a staff meeting.
Every and all do not have the same meaning when they are used with expressions of time. For example, if you do something every morning, you do it regularly each morning. If you do something all morning, you spend the whole of one morning doing it.
He goes running every day.
I was busy all day.
If something happens, for example, every other year or every second year, it happens one year, then does not happen the next year, then happens the year after that, and so on.
We only save enough money to take a real vacation every other year.
It seemed easier to shave every second day.