I know about the logical expression of 'if --- then', such as 'If the temperature reaches or exceeds a particular temperature, then the kettle will turn off.'
But what about situations that involve 'when'. For example - 'When we see the signal, then everyone can begin to raise their hands'.
I was 'googling' for information about this, but have found nothing so far about this. But I'm definitely interested to find out whether it is feasible to use 'when' followed by 'then'. Thanks all!