Can для настоящего времени, be able to - для будущего. Не так уж это и сложно. I can learn 10 new English words a week. I will be able to enter the university after I will pass my exams. I can speak Chinese pretty well. I will be able to visit many interesting countries if I become an interpreter. I can understand why he is so sad. He will be able to beat the record if he trains every day and works hard. I always can improve my opinion. I will be able to visit my favorite museum at the weekend. Can you jump higher than me? Tomorrow I will be able to see a new episode of my favorite serial.
I can learn 10 new English words a week.
I will be able to enter the university after I will pass my exams.
I can speak Chinese pretty well.
I will be able to visit many interesting countries if I become an interpreter.
I can understand why he is so sad.
He will be able to beat the record if he trains every day and works hard.
I always can improve my opinion.
I will be able to visit my favorite museum at the weekend.
Can you jump higher than me?
Tomorrow I will be able to see a new episode of my favorite serial.