?釋義：

Volunteered是動詞volunteer的過去式和過去分詞形式，意為“自愿做某事”、“志愿參加某項活動”或“自愿提供幫助”。

用法：

1. 作為及物動詞，volunteered通常接受諸如名詞、代詞或從句等作賓語，表示主動提出或自愿做某事。：

- She volunteered to help with the charity event.

（她自愿幫助慈善活動。）

- He volunteered his time to teach English to underprivileged children.

（他自愿抽出時間教貧困兒童英語。）

2. 作為不及物動詞，volunteered可以單獨使用，表示主動提出或自愿參加某項活動。：

- They have volunteered for the local environmental group.

（他們自愿加入了當地的環保團體。）

- She often volunteers at the animal shelter on weekends.

（她經常在周末在動物收容所做志愿者。）

3. Volunteered也可用作名詞volunteer的過去式和過去分詞形式，表示“志愿者”、“義工”。：

- The organization is always in need of volunteers to help with their projects.

（該組織總是需要志愿者來幫助他們的項目。）

- He was recognized as an outstanding volunteer for his dedicated service at the hospital.

（他因在醫院的無私服務而被認為是一名杰出的志愿者。）

例句：

1. She volunteered to cook dinner for the entire group.

（她自愿為整個團隊做晚餐。）

2. John volunteered to drive the elderly residents to their doctor's appointments.

（約翰自愿開車送老年居民去看醫生。）

3. The students volunteered their time to clean up the park on Earth Day.

（學生們自愿花時間在地球日清理公園。）

4. He has been volunteering at the local food bank every Saturday for the past year.

（過去一年里，他每個星期六都在當地的食物銀行做義工。）

5. After retiring, Mary decided to become a volunteer at the community center.

（退休后，瑪麗決定在社區中心做義工。）

例句參考：

1. Volunteering is not just about giving your time, it's about making a difference in someone else's life.

（做志愿者不僅僅是花時間，更重要的是給別人的生活帶來改變。）

2. I never thought volunteering at the homeless shelter would have such a profound impact on my life.

（我從沒想過在無家可歸者收容所做志愿者會對我的生活產生如此深遠的影響。）

3. The organization relies heavily on volunteers to carry out their mission of helping those in need.

（該組織極大地依賴志愿者來實現他們幫助有需要的人的使命。）

4. My experience as a volunteer in Africa opened my eyes to a whole new world and changed my perspective on life.

（在非洲做志愿者的經歷讓我眼界大開，改變了我對生活的看法。）

5. Volunteering not only benefits the community, but also allows individuals to develop new skills and gain valuable experience.

（做志愿者不僅有益于社區，也能讓個人發展新技能，獲得寶貴的經驗。）