おやおや、食事の途中に席を立つとはマナーに反しますね。

tbd

Oh my, leaving the table in the middle of a meal is bad manners, you know.

おやおや。いかな体育の授業といえど・・・真剣勝負の意気込みで臨まなければ、いざ実戦と言う時に役に立ちませんよ。

tbd

Well, even if it is just P.E. class, if you don't take it seriously, it won't do you any good in a real match.

おやおや困ったものだ、いつも同じ間違いばかりして。

tbd

Well really, you are always repeating the same mistake.