French Phrase
Si les voyants clignotent, c'est qu'il y a de l'activité.
Meaning
The sentence states that when the indicator lights are flashing, it signals that some activity is taking place. It is a typical way to describe the status of a machine or system.
When to use
Use this phrase when you need to explain the meaning of flashing lights on equipment, dashboards, or any device that uses visual signals to show that something is happening.
✦Grammar Breakdown
Silesvoyantsclignotent,c'estqu'ilyadel'activité.
Si + présent
The conjunction 'si' introduces a condition and is followed by the present indicative to express a real or possible situation.
c'est que
The structure 'c'est que' is used to explain the reason or cause of the preceding clause, similar to 'it means that' in English.
Il y a
A fixed expression meaning 'there is/are', used to state the existence of something.
Partitive article 'de l''
Used before a non‑countable noun (activité) to indicate an indefinite amount.
Verb agreement
The verb 'clignoter' agrees with the plural subject 'les voyants' (clignotent).
🗨In Conversation
Les voyants clignotent, que signifie‑t‑il ?
The lights are flashing, what does that mean?
Si les voyants clignotent, c'est qu'il y a de l'activité.
If the lights are flashing, it means there is activity.
✕Common Mistakes
Si les voyants clignotent, il y a de l'activité.
Learners often drop the 'c'est' and say 'Si les voyants clignotent, il y a de l'activité', which loses the explanatory nuance.
Si le voyant clignote, c'est qu'il y a de l'activité.
The verb must agree with the plural subject; using the singular 'clignote' is incorrect.
c'est qu'il y a la activité.
Do not use the definite article 'la' here; the partitive 'de l'' is required because 'activité' is uncountable.
↔Alternatives
Si les voyants s'allument, cela indique qu'il y a de l'activité.
If the lights turn on, that indicates there is activity.
Lorsque les voyants clignotent, cela veut dire qu'il y a de l'activité.
When the lights flash, it means there is activity.
Des voyants qui clignotent signifient qu'il y a de l'activité.
Flashing lights mean there is activity.
Cultural Tip
In French technical and everyday language, the construction 'c'est que' is very common for giving explanations. It sounds slightly informal, so in a formal written report you might prefer 'cela signifie que' or 'cela indique que'. Also, French speakers often use the verb 'clignoter' for electronic indicators, whereas in English 'blink' is more common.