You use each in front of the singular form of a countable noun to talk about every person or thing in a group. You use each rather than “https://www.thefreedictionary.com/every” when you are thinking about the members of a group as individuals.
Each applicant has five choices.
They interviewed each candidate.
Each country is divided into several districts.
Instead of using “https://www.thefreedictionary.com/each”, you can sometimes use each of. For example, instead of saying ‘Each soldier was given a new uniform’, you can say ‘Each of the soldiers was given a new uniform’. Each of is followed by a determiner and the plural form of a countable noun.
Each of these phrases has a different meaning.
They inspected each of her appliances carefully.
You also use each of in front of plural pronouns.
They were all just sitting there, each of them thinking private thoughts.
Each of these would be a big advance in its own right.
When you use each of in front of a plural noun or pronoun, you use a singular form of a verb after the noun or pronoun.
Each of these cases was carefully locked.
Each of us looks over the passenger lists.
You never use each without of in front of a plural noun or pronoun. Don’t say, for example, ‘Each cases was carefully locked‘.
Don’t use words such as ‘almost’, ‘nearly’, or ‘not’ in front of each. Don’t say, for example, ‘Almost each house in the street is for sale‘. You say ‘Almost every house in the street is for sale’.
They show great skills in nearly every aspect of school life.
Not every lecturer wants to do research.
Don’t use “https://www.thefreedictionary.com/each” or ‘each of’ in a negative clause. Don’t say, for example, ‘Each boy did not enjoy football‘ or ‘Each of the boys did not enjoy football‘. You say ‘None of the boys enjoyed football’.
None of them are actually African.
None of these suggestions is very helpful.
You usually use a singular pronoun such as he, she, him, or her to refer back to an expression containing each.
Each boy said what he thought had happened.
However, when you are referring back to an expression such as each person or each student which does not indicate a specific sex, you usually use a form of they.
Each resident has their own bathroom.