両方とも
解説 Definition
「both of」は二つのものや人の両方を指すときに使う言い方で、後ろに複数の名詞や代名詞を続けてどちらも等しく関係することを強調できます。
"Both of" refers to two people or things together. It is used when you want to say that the two members of a pair are included. It is often followed by a plural noun or pronoun, such as "both of them."
覚え方のコツ Memory Tip
both は「2つをまとめて両方」、of は「その中の」という感覚。まず both of us, both of them, both of the books の3型を丸ごと覚えると使いやすい。all of が3つ以上に広がるのに対し、both of は必ず2つ限定。either of は「どちらか一方」、neither of は「どちらも〜ない」で対にすると整理しやすい。会話では both the books のように of を省くこともあるが、代名詞では both of us の形が自然。of の後ろは複数扱いになる点にも注意。
`Both` is always about two, not three or more. Remember common chunks like `both of us`, `both of them`, and `both of the books`. It is useful to learn it next to `either of` and `neither of`, because all three talk about the same two choices.
例文
Both of the answers are correct.
二つの答えの両方が正しい。
Both of my parents speak English and Japanese.
私の両親は英語も日本語も話す。
both of の類義語・関連語
類義語
both of の語源・成り立ち Etymology
bothは古ノルド語báðir（両方の）に由来し、ofは古英語of（～の）から。ゲルマン祖語*bai（二つ）が語根で、数字の「2」と同源。関連語：between（間に）、bilateral（二国間の）。
Both comes from Old Norse báðir, meaning "the two together," while of comes from Old English of. The deeper root is a Germanic form linked to the idea of "two." Over time, both of became a common way to point to two people or things as a pair.
同じレベルの英単語をもっと
英検3級の一覧へ →外部辞書で調べる
この単語を英単語クイズで覚えよう