verb
BAD : My job involves to deal with customer complaints.
GOOD : My job involves dealing with customer complaints.
◆◆◆
involve ( doing ) sth : 'A proper repair would involve stripping all the tiles off the roof.'
verb
BAD : My job involves to deal with customer complaints.
GOOD : My job involves dealing with customer complaints.
◆◆◆
involve ( doing ) sth : 'A proper repair would involve stripping all the tiles off the roof.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012