Joining sentences 

When you join two complete sentences into a single sentence, you can use commas but follow them with a suitable connecting word: and, or, but, while or yet.

Exemple correcte The group members had to hand in their reports last week, but some were only submitted this week.


The comma is not required if the subject of the second part of the sentence is omitted or if the conjunction used is and or or.

Exemple correcte The student had to hand in the work by Friday but didn’t make the deadline.

Exemple correcte The student had to hand in the work by Friday or the work would receive a failing mark.
Darrera actualització: 17-11-2021
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Recommended citation:
«Joining sentences» [en línia]. A: Llibre d’estil de la Universitat de Barcelona. Barcelona: Universitat de Barcelona. Serveis Lingüístics. <http://www.ub.edu/cub/criteri.php?id=2315> [consulta: 14 agost 2022].