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I think in all situations where either `一緒に` could be used, `二人で` can also be
used, and vice versa. I suppose 三人、四人、五人、etc. can also be used here if that's
the number of people you are talking about.

But I'm curious as to the different connotations (if they exist) in these
words/phrases.
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2012-01-22T05:32:18.770
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2012-05-08T19:00:50.277
2012-05-08T19:00:50.277
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word-choice nuances
What is the difference between 一緒【いっしょ】に and 二人【ふたり】で?
One shows the quantity. The other expresses the "togetherness" of the action.
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2012-01-22T11:20:28.043
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there is no trick, one is "together", the other is "the both of us". That's
it.
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2012-01-22T12:40:00.547
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2012-01-22T12:40:00.547
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As for connotations:

  * 一緒に行きませんか Would you like to join me/us (no information about how many we are)
  * 二人で行きませんか Let's go just the two of us (sounds a bit like you're inviting someone on a date)

I wouldn't use ○人で unless that exact number is important for some reason.
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2012-01-22T12:44:06.910
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