You do a great deal of harm, right," to which Don Giovanni replies in Italian--I'll translate it, but you can hear that--he says "ma, i tu tu on monde".

你这样造成了很大的伤害“,唐乔凡尼用意大利语回答道--我会翻译，但你们可以听一下--他说

youdao

Plus, Tu is always singular. If you talk to more than one person, use vous.

Tu永远是单数，如果你和多个人交谈要用vous。

youdao

Si tu veux pas voir ce film, lequel veux-tu voir ? If you don't want to see this movie, which one do you want to see?

如果你不想看这部片，你想看哪部？

youdao

" But you don't hear "Et tu, Cornificie?

WSJ: Go Ahead and Name Her Rhiannon: Joe Queenan on Baby Names | Moving Targets

Tu should only be used with people you know well, such as office colleagues.

ECONOMIST: Business travel

"As soon as you begin empathizing with your competitor, you may not have that killer instinct, " Tu told CNN.

CNN: December 6, 2012 -- Updated 1403 GMT (2203 HKT)