Either of意思

"Either of" is a phrase used to indicate a choice between two options. It is typically followed by a noun or a pronoun and means "any one of the two." For example:

"You can choose either of the books to read."

In this sentence, "either of" is used to indicate that the choice is between two books.

It's important to note that "either of" is used when referring to two items, and "either" alone is used when referring to one of two items without specifying which two. For example:

"You can choose either book to read."

In this sentence, "either" is used without "of" because the speaker is not specifying which two books the listener can choose from. Instead, the listener is being told that they can choose from any two books, without specifying which two.