The way I do it... may or may not be as the recording (on Ian & Sylvia's 1966 album of the same name), but from the way my Dad & Mom used to duet on it, then evolving some as I played it myself over the years.
intro: D Dsus2 Dsus4 D (x2)
D G D Dsus2 Dsus4 D
play one more, and then I'm leavin', boys
G G/F# Em Em7 A Asus4 A
pick one more, let those guitars ring
A7 D D7 G D Dsus2 Dsus4 D
I can't tarry here too long, for I do believe
G D C A
she been high-strung, like a swallow on the wing
n/c G A
she may be go - one
A7 G D
well, this smoky laughing room does seem to ease my mind
G G/F# Em Em7 A Asus4 A
not to mention a few-too-many, that I've had
A7 D D7 G D Dsus2 Dsus4 D
but I'll pack my guitar up, for I do believe
G D C A
she been high-strung and lately feelin' bad
n/c G A
she may be go - one
G D Em A
ooh, ooh... ooh ooh
A7 G D
well, we ain't been gettin' along for 'bout a month or more
G G/F# Em Em7 A Asus4 A
yes, I might be better off if she'd just go
A7 D D7 G D Dsus2 Dsus4 D
but to get home with the dawn, and find an empty room
G D C A
could I stand the pain, I really don't think so
A7 G D Dsus2 Dsus4 D
so play one more, and then I'm leavin', boys
G G/F# Em Em7 A Asus4 A
just pick one more, and let those guitars ring
A7 D D7 G D Dsus2 Dsus4 D
I can't tarry here too long, for I do believe
G D C A
she been high-strung, like a swallow on the wing
n/c G A
she may be go - one...
G A
go - one...
G D Em A D Dsus2 Dsus4 D
ooh, ooh... ooh ooh... ooh