eitherとは 意味・定義・例文
Adjective 形容詞
1. one or the other of two things or people
どちらかの
You may take either book.
両方の
There are a lot of stores on either side of the road.
Adverb 副詞
～もまた
He can't play the piano and I can't either.
2. used before one or the other given alternatives
～かまたは～か, ～か～かどちらか
You can either stay or go.
Pronoun 代名詞
どちらか, どちらでも
Choose either of the two books.
どちらも
I don't know either of them. ー I know neither of them.