可以帮我看看这句话be convinced的用法吗

问题描述:

可以帮我看看这句话be convinced的用法吗
Darwin was convinced that the loss of these tastes was not only a loss of happiness,but might possibly be injurious to the intellect,and more probably to the moral character.
翻译成中文是:达尔文深信,没有了这些兴趣不仅会丧失快乐,而且可能会对一个人的智力甚至道德品质造成损害.
我的理解convince是使确信,使信服的意思,was convinced 应该是表示被动,被说服
为什么这里要用被动呢?

您好,很高兴为您解答!Darwin was convinced that the loss of these tastes was not only a loss of happiness, but might possibly be injurious to the intellect, and more probably to the moral character. 【...