Meaning of APPROVE in English
BAD : Those who approve the death penalty claim that life imprisonment is not effective.
GOOD : Those who approve of the death penalty claim that life imprisonment is not effective.
BAD : Some husbands do not approve the idea of their wives having a job.
GOOD : Some husbands do not approve of the idea of their wives having a job.
approve sth (without of ) = formally accept a plan, proposal or application: 'The use of the new drug has yet to be approved by the Medical Research Council.'
approve of sb/sth = think that someone or something is good: 'I'm sure that most athletes will approve of the new rules on drug testing.' 'I don't approve of sending young children to boarding school.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012