8.4 Both ... and, either ... or, neither ... nor

Here are examples of the use of both ... and (tant ... com), either ... or (o bé ... o bé) and neither ... nor (ni ... ni):

Both Robin and Richard are good swimmers.
(Tant en Robin com en Richard són bons nedadors.)

Sally can both sing and play the piano.
(La Sally sap tant cantar com tocar el piano.)

You can pay either by cheque or in cash.
(Pots pagar o bé amb xec o bé en metàl·lic.)

Either they come tomorrow or there will be trouble.
(O vénen demà o hi haurà problemes.)

We don't have either the expertise or the time.¹
(No tenim ni l'expertesa ni el temps.)

We have neither the expertise nor the time.¹
(No tenim ni l'expertesa ni el temps.)

Neither Tom nor Eric passed the exam.
(Ni en Tom ni l'Eric van aprovar l'examen.)

¹ Notice that if there is already a negative word (here: don't), we use either ... or. The two versions mean the same; the version with neither ... nor is more formal.

For both, see also all, both.