Question

I’m afraid (that) you don’t understand what I said.这里的afraid才是宾语，

为什么you don’t understand what I said.还是宾语从句呢？

Answer 1

因为 what I said 是主语, 是对方要表达的重点, 可惜你不懂的 you don’t understand 就变成宾语 !!

Answer 2

这是英语中的某些特殊句型， 形容词后的宾语从句，如I am glad that he came at last. She is pleased that her mother is getting better.

Answer 3

啥？主系表afraid这里是表语