Services publics et Approvisionnement Canada
Symbole du gouvernement du Canada

Liens institutionnels

 

Avis important

L'outil Writing Tips a été archivé et ne sera plus mis à jour jusqu'à son retrait définitif.

Pour obtenir notre contenu le plus à jour, veuillez consulter Writing Tips Plus, un outil combinant le contenu des outils Writing Tips et The Canadian Style. N'oubliez pas de modifier vos favoris!

Rechercher dans Canada.ca
Pour commencer votre recherche, cliquez sur la première lettre du mot voulu dans l'alphabet ci-dessous.

run-on sentences

A run-on sentence is one that contains two or more independent clauses (simple sentences) that are not properly connected.

Types of run-on

There are two main types of run-on: the fused run-on and the comma splice. A few sources identify a third kind of run-on, sometimes called the and run-on.

Fused run-on

In a fused run-on, the clauses are run together without anything to connect them:

  • The power went out last night the lights were off all over the city.

Comma splice

In a comma splice, the clauses are joined incorrectly with a comma:

  • The power went out last night, the lights were off all over the city.

(The use of a comma alone between independent clauses is correct only if the clauses are short and parallel: John saved, Tara spent.)

The comma splice is especially common when a conjunctive adverb (however, in addition, therefore, etc.) appears between the two clauses:

  • The power went out last night, therefore, the lights were off all over the city.

And run-on

In an and run-on, the clauses are incorrectly joined by one of the coordinating conjunctions alone, without a comma:

  • The power went out last night and [or so] the lights were off all over the city.

Correcting a run-on

There are several ways to correct a run-on sentence. You can try one of the following solutions.

Solution 1

Separate the two clauses with a period:

  • The power went out last night. The lights were off all over the city.

Solution 2

Join the two clauses with a comma and a coordinating conjunction (for, and, nor, but, or, yet, or so):

  • The power went out last night, and the lights were off all over the city.

Solution 3

Join the two clauses with a semicolon (and a conjunctive adverb if it improves the flow of ideas):

  • The power went out last night; the lights were off all over the city.
  • The power went out last night; as a result, the lights were off all over the city.

Solution 4

Make one of the clauses into a dependent word group (such as a dependent clause or a phrase):

  • When the power went out last night, the lights were off all over the city.
  • During last night’s power outage, the lights were off all over the city.