be

/biː/ v.
标准词条 CET-4
一句话记住

是；处于；用于构成进行时和被动语态

释义与例句

linking v. 是；处于
used to describe the identity, qualities, state or position of the subject
  1. Her brother is an engineer.
    她哥哥是一名工程师。
  2. The streets were quiet after midnight.
    午夜过后，街道很安静。
展开其余 1 条例句
  1. Your keys are on the kitchen table.
    你的钥匙在厨房桌上。
aux. v. 用于构成进行时和被动语态
used with present participles to form continuous tenses and with past participles to form the passive
  1. They are waiting for the results.
    他们正在等结果。
  2. The bridge was built in 1890.
    这座桥建于1890年。
展开其余 1 条例句
  1. We were being followed, so we called the police.
    我们当时正被人跟踪，所以报了警。

词源与构词

记忆钩子 be 后接名词说明身份、接形容词说明状态、接介词短语说明位置；进行时看 be doing，被动语态看 be done，am/is/are/was/were 只是同一结构的变化形式。

词族与关联词

易混词（形近或义近，注意区别）
  • become 成为；变得
    be 描述已经存在的身份或状态，如 She is tired；become 强调从一种状态进入另一种状态，如 She became tired，后接名词或形容词。
    The weather became colder towards evening. 临近傍晚，天气变冷了。
常见搭配
  • be likely to 很可能
    The road is likely to be busy during rush hour. 这条路在高峰时段很可能拥堵。
  • be about to 正要做；即将
    We were about to leave when the phone rang. 我们正要离开，电话响了。
  • there is/are 有；存在
    There are two visitors waiting at reception. 前台有两位访客在等。