Learning a language is, in some way, like (1) learning how to fly or play the piano. There (2) are important differences, but there is a very important similarity. It is this: learning how to do such things needs lots (3) of practice. It is never simply to “know” something. You must be able to “do” things with what (4) you know. For example, it is not enough simply to read a book on (5) how to fly an aeroplane. A (6) book can give you lots of information about how to fly, but if you only read a book and then try to (7) fly without a great deal of practice first, you will crash and kill (8) yourself. The same is true of (9) playing the piano. So you think it is enough simply to read about it? Can you play the piano without having lots of (10) practice first?