We have all lost the game.

SquareWe have all lost the game.

"All" has many grammatical uses, but I take it here as an adjective.

I think it's similar to "We all are lost./ We are all lost."

Thanks, Avangi.

I am a bit confused. If it is an adjective which word does it modify, we or something else?
I am wondering why it is grammatical to put the adjective in that position.

I take it as modifying the subject, "We." (We all are lost.) (All of us are lost.)

The passengers all have drowned.

I suppose you could argue that it's a pronoun.

Hi,

In your sentences the word "all"s are put after the pronoun "we" and that makes sense to call them "adjective"s. However, I am still not comfortable with the original one. Here "all" is not near "we" and that doesn't make sense to me to call it adjective. Could you explain the grammar here?

We have all lost the game.

I agree that the exact word combination seems awkward.

SquareWe have all lost the game.

But isn't it the tense (present perfect) which makes it so?
The grammar should be independent of the tense, to some extent.
So that if you simply change the tense, the underlying grammar should be the same.
Let's try it in simple past, dropping the "have."