became 是动词 become 的过去式，读音为英 /bɪˈkeɪm/、美 /bɪˈkeɪm/，核心含义是“变成、成为”，用于描述人或事物从一种状态、身份或性质转变为另一种的过程，发生在过去某个时间点。它是英语中表达“变化”的基础词汇，尤其强调转变的结果，常与名词、形容词或过去分词搭配，构成“主语 + became + 表语”的核心句型。
后接名词：表示身份或角色的转变
强调从原有状态过渡到新的身份、职业或事物类别。
She became a famous writer after publishing her first novel.（她出版第一部小说后成为了著名作家。）
The small village became a popular tourist destination in recent years.（这个小村庄近年来变成了热门旅游景点。）
后接形容词：表示状态或特征的变化
描述情绪、性质、外观等方面的改变，是最常见的用法之一。
The room became quiet when the teacher started speaking.（老师开始讲话后，房间变得安静了。）
He became angry when he heard the bad news.（听到坏消息后，他变得愤怒起来。）
后接过去分词：表示被动或结果状态
此时过去分词相当于形容词，描述转变后的状态，不强调动作的执行者。
The truth became known to everyone after the investigation.（调查后，真相为所有人所知。）
The plan became abandoned due to lack of funding.（由于资金不足，这个计划被搁置了。）
与介词短语搭配：说明转变的原因或方式
通过介词短语补充转变的背景或条件。
She became interested in painting through her father’s influence.（受父亲影响，她对绘画产生了兴趣。）
The city became prosperous because of its strategic location.（这座城市因地理位置优越而变得繁荣。）
| 语境类型 | 例句 |
|---|---|
| 身份转变 | He became a doctor at the age of 25.（他25岁时成为了一名医生。） |
| 状态变化 | The weather became warmer as spring arrived.（春天来临时，天气变得暖和了。） |
| 情绪变化 | She became sad when her pet dog passed away.（宠物狗去世后，她变得悲伤。） |
| 社会现象 | Online shopping became popular during the pandemic.（疫情期间，网购变得流行。） |
| 自然现象 | The sky became dark before the storm.（暴风雨前，天空变暗了。） |
| 抽象概念 | His dream finally became reality after years of effort.（多年努力后，他的梦想终于实现了。） |
| 关系变化 | They became enemies after a serious argument.（一次激烈争吵后，他们成了敌人。） |
| 能力变化 | He became fluent in English after living abroad for 5 years.（在国外生活5年后，他英语说得很流利。） |
| 客观描述 | She became pregnant in 2023 and gave birth to a baby girl.（她2023年怀孕，生下了一个女儿。） |
| 哲理表达 | Failure sometimes becomes a stepping stone to success.（失败有时会成为成功的垫脚石。） |
became of：表示“（某人/某物）后来怎么样了”，常用于疑问句句首，询问下落或结局。
What became of the old library we used to visit?（我们以前常去的旧图书馆后来怎么样了？）
No one knows what became of him after he left home.（他离家后，没人知道他的下落。）
became known/famous：表示“为人所知/成名”，强调知名度的提升。
The artist became known for his unique painting style.（这位艺术家因独特的绘画风格而闻名。）
The story became famous through word of mouth.（这个故事通过口口相传变得家喻户晓。）
became used to：表示“逐渐习惯于……”，后接名词或动名词，强调适应的过程。
She became used to living alone after a few months.（几个月后，她习惯了独自生活。）
时态限制：作为 become 的过去式，仅用于过去时态，不可与现在完成时的“for + 时间段”连用，需用其他句式转换。
✅ He became a teacher 10 years ago.（他10年前成为了老师。）
❌ He has become a teacher for 10 years.（错误：不可直接与时间段连用）
避免冗余：无需在 became 后加“to be”，直接接表语即可。
✅ She became a singer.（正确）
❌ She became to be a singer.