For most children, the most useful way of spending their time is playing a game. It doesn't matter1the game is. Things become better when they need a (n)2to play with. On the one hand, it is quite3for the development of a child's personality (个性) to win and to4the best ways to get that. On the other hand, if a child only cares about5then for him, playing a game is funny only when he wins. Or if he finds a better partner, he will get6and he doesn't want to go on playing.
It's parents'7to make their children know that: you can't always win and there are many unpleasant moments8when you have to learn how to lose. The idea is to compete, to prove you are good, not only to win.
In a word, playing a game is not funny only when you win. It is funny9you enjoy it and try your best to win. If you are just a little bit unlucky, don't10a lot. You will surely prove your abilities some other day.