You always have to get worried in history when people start talking about how human beings or human behavior is rooted in nature.

当你了解那段历史中的人们在讨论,某些人类或者人类行为是天性使然时,你会为此担忧

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And you would express this pattern if you're concerned about something that's about to happen,

当你对可能发生的事有所担忧时，你可以用这个句型来表达。

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You say, oh oh, this is bad news, if this is the only--if only one rating agency does that, okay, but--and it's only AMBAC that's been down-rated, but you starting wondering.

你会说,这是个坏消息,如果只是一家评级机构下降了评级,而且只有安巴克一家被降级,那还好,不过你开始担忧了

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Or in situations where you have concern for your safety or for other's safety.

或者当你在为自己或他人的安危感到担忧时，都可以使用这个句型。

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This is when you feel concern in your heart

一般你会在内心感到担忧，

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or if you're concerned about someone.

或者当你担忧某人时，也可以使用这个句型。

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