If you had came yesterday, you could have seen him in the flesh.
I wish that I could have known you ten years ago.
或是 I wish that I had known you ten years ago.
与事实相反的,或是将来不太可能实现的,用wish
对过去虚拟:从句要用:过去完成时/could have done
If you had came yesterday, you could have seen him in the flesh.
I wish that I could have known you ten years ago.
或是 I wish that I had known you ten years ago.
与事实相反的,或是将来不太可能实现的,用wish
对过去虚拟:从句要用:过去完成时/could have done