Question

had I followed your advice, I would have had no t

rouble with my papers.

Answer 1

Had I followed your advice, I would have had no trouble with my papers. 这是一个倒装句。顺过来就是：
=If I had followed your advice, I would have had no trouble with my papers.
如果我当初要是听你的忠告，我就不会在论文上碰到麻烦了。

类似的还有：
Had I known your phone number, I would have called you.
=If I had known your phone number, I would have called you.
如果我当时要是知道你的电话号码，我（当时）就给你打电话了。

下面我给你一个句子，你能模仿上面倒装吗？
If you had come a little earlier, you would have seen him.
=

追答

请给我一个好评。

请给我一个好评。谢谢！！