What's the difference between ね and でしょう for tag questions?


Both ね and でしょう can be used to form tag questions to confirm an opinion like
so:

> 1) 疲れたでしょう。 (more of a guess based on evidence / polite)
>
> 2) 疲れたね。 (more forceful / the speaker is more certain)
>
> 3) 疲れたでしょうね。 (forceful, but polite)

For the purposes of these questions you can imagine that these sentences are
spoken to someone who has just done something physically exerting (like moving
boxes for 7 hours).

Am I right about these guesses? Can anyone elaborate more?




When a speaker says `でしょう`, he or she puts more weights on the guess or
asking.

When a speaker says `ね`, he or she expects an agreement from the listener. It
is slightly more assertive (or _forceful_ as you say) than `でしょう`. If you want
to add the politeness, you can rephrase it by saying `疲れましたね。`.

However, `でしょうね` is more assertive than the two above, and the speaker might
even not expect the listener to respond.

Note that `疲れたでしょうね。` is slightly unnatural. I would say `お疲れでしょうね。`.

