A：What do you plan to do on Sunday morning?
B：Nothing special.
A：How about going to English corner with me?
B：Oh, I'd rather not.
A：Why not ?
B：You know, I am poor at English, especially spoken English.
A：That's why you should go there, If you don't dare to speak English owing to the fact that you are afraid of making mistakes, you simply will never learn English.