willing
单词辨析：
主要用于人或行为，强调主动去做某事，而非应征的、受强迫的，常含无任何报酬之意。
Mary is a voluntary helper.
玛丽是自愿帮忙的。
Another source of income is from voluntary contributions of the local people.
另一个收入来源是当地人的自愿捐献。
We must adhere to the principle of voluntary participation.
我们必须坚持自愿参加的原则。
强调做某事是自愿而乐意的、心甘情愿的，用于此义时只作表语，通常后接动词不定式。
How much is he willing to pay?
他愿意付多少钱？
I was very willing to give her the chance she needed.
我很愿意把她需要的机会给她。
The lawyer told me he was perfectly willing to help.
律师告诉我，他非常愿意帮忙。
相关例句：
There are, of course, questions which she will not be willing to answer.
当然，有些问题是她不愿回答的。
We are willing to help but unable to do so about this.
这件事我们是爱莫能助了。
Have the party on a Saturday, when you can get your partner and other willing adults to help
把聚会安排在周六，这样你就可以找自己的搭档和其他愿意帮把手的成年人来帮忙了。
Both sides are willing to make allowances for each other's political sensitivities
双方都愿意体谅彼此的政治敏感问题。
We are willing to authorize the president to use force if necessary.
我们愿意授权总统在必要的时候使用武力。
He was willing to take his oath to all he said.
他愿对他所说的一切起誓。