be 动词:am / is / are / was / were / been / being
一、be 动词的 3 大核心作用
- 表示「是」
I am a manager. 我是经理。
This is a machine. 这是一台机器。
They are workers. 他们是工人。
- 表示「在 / 存在 / 状态」
He is in the factory. 他在工厂。
The order is ready. 订单准备好了。
We are busy. 我们很忙。
- 帮助构成时态、被动(最重要!工作必用)
① 现在进行时:be + doing
We are machining. 我们正在加工。
The machine is running. 机器正在运行。
② 被动语态:be + done(生产英语超常用)
The parts are finished. 零件已完成。
The job is done. 工作做完了。
二、现在时:am / is / are
I → am
he / she / it / 单数 → is
you / we / they / 复数 → are
三、过去时:was / were
I / he / she / it → was
you / we / they → were
四、完成时:have / has + been
We have been busy. 我们一直很忙。
The order has been completed. 订单已完成。
五、进行时:be + being
- The machine is being repaired. 机器正在被修理。
六、be 动词的超级口诀(记住就够)
be = 是 / 在 / 存在
be + 形容词 → 表示状态(busy / ready / ok)
be + doing → 正在做
be + done → 被做(被动,工厂最常用)