Can vs. Be Able To
Be able to often has the same meaning as can. I am unable to/can’t understand his motive. He is able to/can support her. Can is preferred in expression like can see, can hear etc....
English Grammar Lessons And Worksheets
Be able to often has the same meaning as can. I am unable to/can’t understand his motive. He is able to/can support her. Can is preferred in expression like can see, can hear etc....