English Grammer : Certainly

Ladies and Gentlemen Good Morning ! Did you get up early enough to have a good breakfast? We are going to look at CERTAINLY today. Certain can be defined as sure. For example : SHE WILL CERTAINLY BE ON TIME; SHE'S ALWAYS PUNCTUAL. Another example, Can i pay by credit card,please? CERTAINLY. We are happy to accept credit card. All the best ! HEXIAN