[译] 她试图劝告她丈夫不要再抽烟，但只是徒劳。
[误] She tried to dissuade her husband not to smoke again, but in vain.

[正] She tried to dissuade her husband from smoking again, but in vain.
[注] 表示“劝服某人不做某事”，应该说dissuade sb. from doing sth.,不能用动词不定式作为dissuade的复合宾语。