好问题。我一开始也觉得得用did过去式。
因为以前学过走遍美国，隐约记得里边有一集是 爷爷给孙子读信件的片段。专门找到原书重温了一下。果然是 does。

第16集 Full of Surprise
Robbie: What does he say? Is he OK?
Grandpa: Yeah, he'e fine. Just fine. He's writing to me to invite me to spend a weekend with him at his farm.

【 在 bamboo27 的大作中提到: 】
: 七年级英语教材里面的一篇课文，为什么不是“what did he say in the letter?” 而是“what does he say in the letter?”
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