[译] 由于是个囚犯，他不能参加选举。
[误] As he was a prisoner, he was disqualified to take part in the vote.

[正] As he was a prisoner, he was disqualified from taking part in the vote.
[注] disqualify sb. from doing sth. 表示“使某人不能做某事”，不能在 disqualify 后使用动词不定式的复合结构。类似的结构很多，如 prevent sb. from doing sth.（阻止某人做某事），stop sb. from doing sth.（阻止某人做某事），prohibit sb. from doing sth.（禁止某人做某事）等。