but if you explain it to your friend that you or she should not have or should have done something,

如果你想要向你的朋友解释，或者她应该做某事的时候，

I should have 课堂 - SpeakingMax英语口语达人

And she responded, " "I would not live forever, " because we should not live forever.

她回答道，“我不会永远活下去，“因为我们不应该永远活下去。

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