The prolific attacker stresses that it is impossible to find the net in each game, while expressing his satisfaction with becoming the Seleccao's all-time top goalscorer
The 29-year-old netted twice in his country's 5-1 friendly win over Cameroon on Wednesday to take his tally for the Seleccao to 49 goals, thus becoming his country's all-time record scorer, a title which he had previously shared with Pauleta.
However, Ronaldo insists that it would be a mistake to simply presume that he will carry his rich vein of form into this summer's tournament.
"I cannot guarantee any goals at Brazil 2014. I can only guarantee hard work, effort and dedication at the World Cup," the Ballon d'Or holder told AS.
"I'm not looking to break records. These things just happen in the natural way - as a result of hard work, effort and dedication and with the excellent national team we have and a great coach.
"I knew that sooner or later I would reach that figure."
Ronaldo had already matched Pauleta's number of 47 goals for the Seleccao back in 2013. It took the Madrid attacker 110 appearances to dethrone the former Paris Saint-Germain hitman.