⑴ More and more volunteers joined in the project. (词性 ____;意义 __________ ) ⑵ She volunteered to help me with my swimming skill. (词性 ____;意义 __________ )
[熟读深思]朗读下列句子, 归纳volunteer的词性和意义。
n.
志愿者
vi.
自愿