This renowned scientist then remarked that it was at that moment that he knew he didn't need to bThis renowned scientist then remarked that it was at the moment ___he knew he didn't need to be afraid to make mistakes.I为啥此处用that而不选when,这个从句是强调句吗

问题描述:

This renowned scientist then remarked that it was at that moment that he knew he didn't need to b
This renowned scientist then remarked that it was at the moment ___he knew he didn't need to be afraid to make mistakes.I
为啥此处用that而不选when,这个从句是强调句吗

对啊,是强调句.应该是用that强调句强调“这个时候不用害怕犯错误”.如果用when好像是强调“讲话的时刻”……貌似有点混乱……