with a will   (TTS發音)

with willingness and zeal；with all one's heart or strength；earnestly；heartily甘心情願；熱切；盡心盡力

    She threw herself into the work with a will. 她全身心地投入了這項工作。

    Whatever he does，he does it with a will. 他不論幹什麼，都盡心盡力。