v. 是;有,存在;做,成为;发生;
aux. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质;
🗣️ 情景例句
No, Mom. We had a great time.
不, 妈妈。我们玩得很高兴。
What are you doing?
你正在做什么?
If you are lucky enough to get a sleeper, you spend half the night staring at the small blue light in the ceiling, or fumbling to find you ticket for inspection.