The sequence of tones in compound sentences consisting of
two or more coordinated clauses depends on the degree of their
semantic unity. If the non-final intonation group (a clause) is
semantically independent and does not imply continuation the
low falling terminal tone is used, eg: j
It was "* only ^Sunday, | and I Vcouldn't go 'home till xWednesday — | or ~* Tuesday the , soonest. (J. D. Salinger)
In case the idea of the non-final clause is not completed and continuation is implied the low rising or falling-rising tones are recommended, eg:
XFabermacher 'nodded in agreement. | but his %eyes , glittered | with Vsilent 'triumph and con'tempt for the x victory. (M. Wilson)
The terminal tone of the final clause is determined by the communicative type of the sentence and the attitudes conveyed by the speaker, eg:
Νε "* walked xout j and the "* doctor followed him.
(S. Maugham) [statement] Shall we "* go there at ,once | or do you pre~*fer to xwait
a little? [alternative question]