M: Laura, what’s
in the mailbox?
W: It’s a thank-you note from our neighbor. They thank us for visiting them last week when the baby was born. They also invite us to have dinner next Friday.
M: Are they back home now?
W: Should be.
这是2022年新高考全国卷2听力录音材料中的一个句子。
请问最后一句的 Should be 为什么没有主语啊?是省略了吗?
是的,对话中的 Should be 属于 They should be back home now 的省略用法。
有关省略主语的用法,请参考网站前面的一个解答:
https://www.cpsenglish.com/question/54026
参考资料(摘自M. Swan的PEU):