你好。
regret to do 与regret doing是不能互换的,因为它们表达的意思完全不一样。
1 regret doing -------解释为“後悔做了某事”
------- I regret coming late yesterday
== I wish I hadn't come late yesterday.
2 regret to do ------解释为“可能会使他人不开心或失望,但还是必须-- - -”
-------I regret to say that we aren't pleased with your woirk.
==I am sorry BUT i MUST say that we aren't pleased with your woirk.
这是学习英语最困难的地方之一。请认真想想吧。
你是想造句还是什么哦,期待你的补充,希望一会儿能为你解答。