善(よ)くぞhow admirably, how wonderfully, how skillfully

先生(せんせい)：「みなさん、善(よ)くぞ勉強(べんきょう)を頑張(がんば)りました。」

Teacher: "Everyone, you have studied so admirably." {how admirably, how wonderfully, how skillfully}

同僚(どうりょう)の棚橋(たなはし)は善(よ)くぞ部長(ぶちょう)に不満(ふまん)をぶつけてくれました。

My colleague Tanahashi skillfully expressed his dissatisfaction to the department head. {how admirably, how wonderfully, how skillfully}

部長(ぶちょう)が部下(ぶか)に：「チームリーダーになることを善(よ)くぞ決心(けっしん)してくれたね。」

The department head said to his subordinate, "How admirably you've decided to become a team leader." {how admirably, how wonderfully, how skillfully}

父(ちち)が娘(むすめ)に：「成人(せいじん)おめでとう。善(よ)くぞ、こんなに立派(りっぱ)になってくれたな。」

The father said to his daughter, "Happy adulthood. How wonderfully you've grown up to be so admirable." {how admirably, how wonderfully, how skillfully}

監督(かんとく)：「選手(せんしゅ)のみんな、善(よ)くぞ勝(か)ってくれたな！これでサポーターも大(おお)喜(よろこ)びだ！」

Coach: "All of the players, how wonderfully you have performed! The supporters will be thrilled with this!" {how admirably, how wonderfully, how skillfully}