Must vs. Have To
Both must and have to can be used to express the conclusion that something is certain. Note that have to is more common in American English. He must be mad to do this. (OR He has to be mad to...
English Grammar Lessons And Worksheets
Both must and have to can be used to express the conclusion that something is certain. Note that have to is more common in American English. He must be mad to do this. (OR He has to be mad to...