421. 他是自愿参加的。

[误] He participated out of his own accord.

[正] He participated of his own accord.

注：accord 作名词用时，意思是“符合”，“一致”。of one\'s own accord 的意思是“自愿地、主动地”。误句在 of his own accord 的前面加上 out 一词是多余的。