past tense

基本解释

They are simply testing whether you can use the past tense correctly!
他其实是在测试你是否会运用过去式回答！
If you want to talk about work you did in the past, use the past tense, e.g.
如果你想谈论你过去做什么工作，用过去时态。
edu.sina.com.cn
But as you can see, all these questions are asked in the past tense - because the actuality of these are low.
但就像你所看到的，这些问句都是过去式，因为这些东西的现实度都很低。

So you would say in the past tense "I lay on the bed because I was tired."
Everything that we had thought that Milton was telling us in the lyric present -- telling us directly, now -- suddenly gets shoved back into the narrative past: "thus sang the uncouth swain." The past tense is important there.
我们想过的弥尔顿在这首抒情诗里,直接告诉我们的所有事，现在，都突然在过去的旁白中一涌而现了：,“吟唱着粗鄙的青年人“，这里的过去时态很重要。
耶鲁公开课 - 弥尔顿课程节选
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

Note that these questions use a past tense voice, as if they have already occurred.
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