Please check

[WZ]

Please explain:

Are these the same and common:

- I never thought that she could sing.
- I never have thought that she could sing.
- I never could have thought that she could sing.

- Isn't it wonderful that they can be together like that?
- Isn't it wonderful when they can be together like that?
- Isn't it wonderful for them to be together like that?

Thanks.

[danmahaffey]

- I never thought that she could sing. OK.
- I never have thought that she could sing. I have never thought that she could sing. Similar to the first sentence.
- I never could have thought that she could sing. I would never have thought that she could sing. In my mind it was very unlikely, not just unexpected.

- Isn't it wonderful that they can be together like that? OK. Makes no point of how long they can be together. Maybe forever, maybe not. Very neutral.
- Isn't it wonderful when they can be together like that? Wonderful when they can, maybe sad when they can't.
- Isn't it wonderful for them to be together like that? For is stronger than that. The sentence suggests overcoming some difficulty to be together.