That's why vs Therefore

Quand utiliser chacun en anglais, avec le sens, le registre et des exemples.

That's why

Top 1000 (très courant)

Therefore

Formel Top 2000 (courant) B1 adverb

Le plus formel: Therefore Le plus courant: That's why

	That's why	Therefore
Prononciation	🇬🇧 //ðæts waɪ// 🇺🇸 //ðæts waɪ//	🇬🇧 /["/ˈðeəfɔː(r)/"]/ 🇺🇸 /["/ˈðerfɔːr/"]/
Sens	C'est la raison. This is the reason.	For that reason; as a result.
Exemple	The project was delayed. That's why we need an extension.	He's only 17 and therefore not eligible to vote.
Registre	Neutre	Formel
Fréquence	Top 1000 (très courant)	Top 2000 (courant)
Niveau CEFR	-	B1
Nature grammaticale		adverb
Collocations	that's why I, that's why we, that's why she, that's why they, that's why he	therefore concluded, therefore it follows, therefore we can, therefore you should, therefore the result
Antonymes	-	however, nevertheless, nonetheless
Erreurs fréquentes	'That's why' is sometimes confused with 'that's because', which has a slightly different use., Learners often forget to follow 'that's why' with a clear explanation., Some may use 'that's why' in overly formal contexts, where a more precise term is needed.	'Therefore' is sometimes confused with 'therefor', which has a different meaning., Learners may use 'therefore' to start a sentence in informal contexts, which can sound awkward., 'Therefore' may be incorrectly placed in a sentence away from the cause or condition.
Notes d'usage	Utilisez 'c'est pourquoi' pour expliquer ou justifier une déclaration. C'est approprié pour la conversation et l'écriture informelle, mais peut être moins formel dans les essais. Use 'that's why' to explain or justify a statement. It's suitable for conversation and informal writing, but may be less formal in essays.	Use 'therefore' to connect ideas in formal writing or speech. It’s less common in everyday conversation and can sound stiff. Avoid it in casual contexts.

Vois-le dans de vrais extraits

That's why I gave it to you.

Sherlock › S1 E1

Because I'm desperate, that's why.

'Cause it ain't there, 'cause storing dead niggers ain't my fuckin' business, that's why !

That's why I gave it to you.

Sherlock › S1 E1

Because I'm desperate, that's why.

That's why

Questions fréquentes : That's why vs Therefore

Quelle est la différence entre That's why et Therefore ?

That's why: This is the reason. Therefore: For that reason; as a result.

Lequel est le plus formel : That's why et Therefore ?

Therefore est le plus formel de tous.

Lequel est le plus courant : That's why et Therefore ?

That's why est le plus courant dans l'anglais de tous les jours.

Peux-tu montrer un exemple de chacun ?

That's why: The project was delayed. That's why we need an extension. Therefore: He's only 17 and therefore not eligible to vote.

Puis-je utiliser That's why et Therefore de façon interchangeable ?

Pas toujours. That's why et Therefore sont proches et se recoupent parfois, mais elles diffèrent par le registre, la fréquence et l'usage, donc remplacer l'une par l'autre peut changer le sens ou le ton. Regarde les différences ci-dessus avant de substituer.