voluntary, willing

名詞 willing:

1. the act of making a choice
   同義詞：volition

動詞 will:

1. decree or ordain
   同義詞：will
2. have in mind
   同義詞：will, wish
3. determine by choice
   同義詞：will
4. leave or give by will after one's death
   同義詞：bequeath, will, leave

形容詞 willing:

1. disposed or inclined toward
2. not brought about by coercion or force
   同義詞：uncoerced, unforced

1. I don't know whether he is willing to come.
   我不知道他是否愿意來。
2. The spirit is willing but the flesh is weak.
   心有余而力不足。
3. I'd like to buy your house if you are willing to sell it.
   如果你愿意賣的話，我想買你的房子。
4. I wouldn't be willing.
   我不會愿意的。
5. She's the willing horse in the office and so gets given most of the work to do.
   她是辦公室里埋頭苦干的人，大部分的工作都交給她去做。
6. He is always a willing helper.
   他是一個樂于幫忙的人。
7. Are you willing to help?
   你愿意幫忙嗎？

will.ing

adj.（形容詞）
Disposed or inclined; prepared:
愿意的，樂意的，有…意向的：
例句：
I am willing to overlook your mistakes.
我愿意忽略你的錯誤

Acting or ready to act gladly; eagerly compliant:
樂意的，心甘情愿的：愉快地做的；積極肯干的，非常配合的：
例句：
.The spirit indeed is willing, but the flesh is weak.(Matthew 2':4)
.精神上樂意接受的，但肉體上卻很虛弱.(馬太福音2':4)

Done, given, accepted, or borne voluntarily or ungrudgingly.See Synonyms at voluntary
自愿的：自愿地或毫不吝惜地做的、給的、接受的或忍受的參見 voluntary
Of or relating to exercise of the will; volitional.
意志力的：與行使意志力有關(guān)的；由于意志的

【引伸】
will.ingly
adv.（副詞）
will.ingness
n.（名詞）