French grammar: expression de la cause

What this grammar point covers

In French, 'expression de la cause' means expressing the reason why something happens. You use special words or phrases to show the cause of an action or situation.

When to use it

Use these forms to explain why something happens, to give a reason, or to answer questions like 'Why?' in French.

Key forms

• parce que + sentence (e.g. parce qu'il pleut)
• car + sentence (e.g. car il est malade)
• puisque + sentence (e.g. puisque tu es là)
• à cause de + noun (e.g. à cause de la pluie)
• grâce à + noun (for positive reasons, e.g. grâce à son aide)

Examples

Tips

• Use 'parce que' to answer 'why' questions. It is the most common way to say 'because'.
• 'À cause de' is used for negative reasons; 'grâce à' is used for positive reasons.
• 'Parce que', 'car', and 'puisque' are followed by a full sentence (subject + verb). 'À cause de' and 'grâce à' are followed by a noun.

Exceptions and edge cases

• Do not use 'parce que' at the beginning of a sentence in formal writing.
• 'Car' is more formal and less common in spoken French.