volunteer
US:/ˌvɑlənˈtɪr/
UK:/ˌvɒlənˈtɪə(r)/
n.:
志愿者；志愿兵；义务工作者；自告奋勇者
v.:
自愿做；义务做；无偿做；主动建议（或告诉）
adj.:
志愿的；志愿兵的；自动的；【植】自生的
网络:
义工；自愿者；志工
Word forms: (复数) volunteers (现在分词) volunteering (过去式) volunteered
Examples
1.
On Friday, please come prepared to make new suggestions, and volunteer for your writing assignments.
你们星期五来时请准备好提一些好的建议，并且主动挑选自己要写的专题。
2.
A few times a year, but especially around the holidays, I take my kids someplace to volunteer.
一年总有那么几次，特别是将近节假日，我会带着我的孩子们去一些地方参加志愿活动。
3.
People did not accept to donate blood for her, so we had to volunteer as family members.
人们不接受她捐出的血液，所以我们不得不志愿家庭成员。
4.
Senator McCain did not call me this time but I thought to volunteer a draft of a concession speech for him next Tuesday, in the event.
参议员麦凯恩这次没打电话给我，但我想主动为他拟一份下周二的败选演讲稿——如果他败选的话。
5.
It is one of three blazes that have now claimed lives of two volunteer firefighters and a pilot of a firefighting plane.
这是正在燃烧的三场大火之一，她已经夺取了两名志愿者的生命和一名灭火直升机驾驶员的生命。
6.
He recalls a woman who said her graduation present of a volunteer vacation to her granddaughter "was a gift of values. "
他回忆一位女士曾说，她把义工服务度假作为“一份有价值的礼物”，送给毕业的孙女。
7.
"He is a true volunteer who has spent much of his life trying to help others who have nowhere else to turn. "
“他是个真正的志愿者，一生中大多数时间都在帮助那些走投无路的人。”
8.
Masako Masuoka, an 81-year-old divorcee, is still fit enough to work as a volunteer cleaner and cook for her elderly neighbours.
81岁的离婚妇女益冈雅子依然能胜任清扫志工，并为她的邻居们煮饭。
9.
He and his wife offer one week of their time every year to volunteer on construction projects around the world.
每年卡特夫妇都会花一周的时间在世界各地参与建设项目的志愿者服务工作。
10.
The author took great pride in striving to be a Olympic volunteer since the event is the grandest sport gala of its kind worldwide.
争当奥运会志愿者让作者感到很自豪。因为奥运会是世界上最大的体育盛典。