So it's not just a question of the past, as I say and as I've said before.

正如我以前说过的，它不只是过去的问题。

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So can be changed slightly, depending on tense, past, present or future as well as whether or not you want to ask a question.

因此这个句型要根据不同的时态，如过去时、现在时和将来时，作出一点调整；另外也会根据是否是问句而略有不同。

There is 课堂 - SpeakingMax英语口语达人

We've done some research on this in the past and found that men and women differ in the response to that question, and of course, the level of stress matters and even the type of stress people are feeling.

我们曾经就此做过一些研究,发现男人和女人对该问题的回答不一样,当然,压力的程度会有一定影响,而且人们所面对的压力类型也会有影响

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