Well, I mentioned that this was just sort of a more modern observation of one that had been made in the past.

我提到过这只是过去所做的观察里,较为先进的一个

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and something that you were doing or how you were being in the past.

和一些你过去已做过的事情，或是你过去是什么样子的。

I was 课堂 - SpeakingMax英语口语达人

And it's talking about the past, about something that you did before,

它用来表示你过去做过的事情，

I used to 课堂 - SpeakingMax英语口语达人

Or something you were doing in the past.

以及你过去做过的一些事情。

I was 课堂 - SpeakingMax英语口语达人