Last year， my father gave me a computer as my birthday gift。 I like it very much， because it is useful to me。 It is a good helper in both our everyday study and life。

It can help us learn more useful knowledge and get more information。 When we are tired，we can use fhe computer to relax ourselves。 Fotexample， we can enjoy beautiful musicand watch wonderful movies by using the computer。 It is very convenient to our life especially with the help of Internet， we can go shopping on line freely at home。 When we have a hard nut to crack， it will help us solve it。However， the computer does harm to us as well。

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If we are addicted to computer games， it will be bad for both our study and health， especially it will do great damage to our eyesights。 In our class， about 50% classmates often play computer games for a long time everyday， so their eyesights become worse and worse。 What’ s more， violence in Internet will have a bad effect on us。 We must keep away from it。

In a word there are two sides to everything。 And the computer is no exoeptim。 We should make good use of computer。 So that it will be more useful and helpful for us。