alors que

Conjunction

 * 1) while, whereas, though;
 * 2)  when, while
 * 1)  when, while
 * 1)  when, while

Usage notes

 * In France, is used in the temporal sense of "when" in a more formal register to introduce the background (given with a verb in the imperfect) to a specific event (given with a verb in the compound past or simple past).
 * In Canada, is used more generally.