Both is a determiner, pronoun and conjunction used to refer to two people or things together.
Common usages of both:
1. Both + noun: "I like both colors."
2. Both of + pronoun: "Both of them are students."
3. Both...and...: "She is both smart and beautiful."
4. With verbs: "They both went to the party."
5. In short answers: "Are you tired?" "Both!" (meaning both tired and not tired)
哎呦喂，both这个词儿可有意思了，它就是个指代俩人儿或者俩东西一块儿的主儿。
咱说说both最常见的几种用法哈：
1. Both直接加名词："这两颜色我都稀罕"（原句：I like both colors）
2. Both of加代词："这俩都是学生"（原句：Both of them are students）
3. Both...and...："她既聪明又漂亮"（原句：She is both smart and beautiful）
4. 跟动词搭配："他俩都去派对了"（原句：They both went to the party）
5. 简短回答："你累不累？" "又累又不累！"（原句：Are you tired? Both!）
特别提醒：both只能用在俩东西上，要是三个以上就得用all啦！比如说"这些书我都看过"就得说"I've read all these books"。