这之前我并不知道什么叫心理变态，但有一点我明白：这听上去更糟。
I didn't know very much about psychopaths back then, but I did know this: it sounded worse.
在来美国之前，我不知道这昆虫的英文名字。
Before coming to the United States, I didn't know the insect's name in English.
在把问题写出来之前，我并不知道这问题的答案，我已经把自己的思想抛在了一边。
The answers to the questions I was putting on paper never came to me until the question was completely written and I'd put my own thoughts away.
在我来这学校之前，我不知道如何自己处理事情。
I did not know how to do things for myself before I came to this school.
在此之前，我从来就不知道这么小的孩子也懂得这些。真的，当有客人来访时，这的确是个不错的方法让孩子觉得有用武之地。
It never would have occurred to me that someone so young would do this, but it's actually a great way to make them feel important and gives them something specific to do when people come over.
我不知道，这所房屋之前是什么样子？
我不知道，这所房屋之前是什么样子？
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