形容词形式是ambitious;
ambitious:adj.有野心的;有雄心的;费力的;耗资的;耗时的
Chris is so ambitious, so determined to do it all
克里斯踌躇满志,决心要将它都做完。
I'm as ambitious as the next man. I'd like to manage at the very highest level.
我和别人一样雄心勃勃,想进入最高管理层。
He's a very ambitious lad and he wants to play at the highest level.
他是个很有抱负的小伙子,想参加最高水平的比赛。