相關知識點：Describe an interesting hobby. You should say:
What it is.
When you began to do it.
How long you spend on it.
How often you do it.
Why you like it.
a) If I had to describe an interesting hobby, I would choose to speak about my stamp collection.
b) I am sure you have met someone who is interested in stamps.
a) I have been collecting stamps for the past two years now.
b) That is to say, for two years I have chosen stamp collecting to be my only hobby.
a) I regularly spend time working on my collection.
b) I guess I spend about two hours every week on my hobby. This is mainly over weekends, as I do not have time during the week.
There are several reasons as for why I would like to talk specifically about collecting stamps. Allow me to explain by mentioning some of them briefly.
a) First of all, when you collect stamps, you are able to learn more about the world, and you will not be bored easily.
b) What I mean to say is that you can get stamps from every country in the world.
a) Secondly, you are able to meet new friends through your hobby.
b) For instance, you have a common interest with someone else, and you can discuss your collections for many hours.
a) Lastly, the hobby will teach you some self-discipline and how to be very systematic.
b) That is to say, you have to tend to your collection regularly, and you have to sort the stamps according to internationally recognized systems.
7. So, those were some thoughts on my favorite hobby.