From Longman Dictionary of Contemporary EnglishI was wondering if/whetherI was wondering if/whethera) spokenASK FOR something/ASK somebody TO DO something used to ask someone politely to help you I was wondering if I could borrow your car? b) INVITEused to ask someone politely if they would like to do something I was wondering if you’d like to come to dinner. → wonder
Examples from the Corpus
I was wondering if/whether• I was wondering if you could babysit tomorrow night.• We were wondering if you'd like to come with us.• Actually, I was wondering if I could paint the room?• I guess I was wondering if people would still call me a hippie if I cut my hair off, you know.• Next weekend. I was wondering if you fancied coming along for the ride.• We were finally talking about bodies. I was wondering whether he would ever make a move. 