Q. How do I use "both", "neither", and "either"?

We use both/neither/either for two things. You can use these words with a noun.

e.g.: Both restaurants are very good.

Neither restaurant is expensive.

We can go to either restaurant. I don't mind.

When you use both/neither/either + of, you always need to add the/these/those/us/them after of.

e.g.: Both of these restaurants are very good.

Neither of the restaurants we went to was expensive.

I haven't been to either of those restaurants.

You can also use both/neither/either alone.

e.g.: I couldn't decide which of the two shirts to buy. I liked both.

"Is your friend British or American?" "Neither. She's Australian."

"Do you want tea or coffee?" "Either, I don't mind."