Prefixing
[计] 加前缀, 加词头
🗣️ 情景例句
Sorry, but she is out for lunch right now.
抱歉，她现在出去吃午饭了。
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
I'm afraid I have some rather bad news for you.
我恐怕有些很坏的消息要告诉你。