Saying "oh you shouldn't have" or "I'm sorry" in those situations in English would just seem awkward, but in Japanese it's perfectly natural.

在英语的一些场合中说“哦！你太客气了！”或者“对不起”会显得有些尴尬，但在日本却非常顺理成章。

youdao

After high school, many people learned English or Japanese, but Meiyu decided to learn Chinese in university.

高中毕业后，很多人学习英语或日语，但梅玉决定在大学里学习中文。

youdao

Many young Japanese now date in their early twenties, but with no thought of marriage.

现在许多日本年轻人在20岁出头就开始约会，但根本没有想过结婚。

youdao

But the Japanese government and public refused to acknowledge it until then - in part, because of the stigma associated with poverty.

VOA: standard.2010.02.25

They usually talk about it as the "lost decade," where Japanese banks were not liquidated but they were not really in business.

他们在谈论它的时候称之为“垮掉的十年“,在这十年里，日本银行并没有破产,但是他们也没有真正在做生意。

耶鲁公开课 - 金融市场课程节选

The Japanese government bailed out the airline three times in the past 10 years, but it could not save the company from bankruptcy this time around.

VOA: standard.2010.02.01

Emma was suffering from something that is sad but all too common in Japanese schools: bullying.

CNN: ASIANOW - TIME Asia

That would not only put further pressure on the yen, but also see deposits in Japanese banks dip.

BBC: Yen breaches 100 threshold mark against US dollar

Some of the stuff coming through is in Japanese, but this says it best: "I'm happy to have a seat!"

ENGADGET: & Joystiq's live coverage of Nintendo's Revolution E3 event