When father bought me a computer for【for改为as】 a birthday present in【in删去】 last year,I felt very excited.As we all know,computers are getting more usefully【usefully改为useful】 nowadays.Much informations【informations改为information】 can be stored in it.We can learn what has lately happened in the world on the Internet.People had to do lots of work which was very danger【danger改为dangerous】.Now,computers can do it instead.When an exams【exams改为exam】 is come【come改为coming】,I do exercises on my computer.Then it will correct them but【but改为to】 tell me the right answer.It is novenient【convenient改为more convenient】,for me to prepare for the exam than before.The computer have【have改为has】 become a real friend of mine.