Weather affects all of us in one way or another,directly or indirectly.For example,good weather makes us happy,bad weather makes us sick and depressed.Besides,on a fine day,we can go out for a walk or play a game in the open.On a rainy day,however,we can only stay indoors.In a word,weather is part of life for all of us.We are concerned about weather.The first thing that many of us do after getting up is to see what the weather is like.With knowledge of the weather,people can arrange work and life of the day.If it is fine,we may decide to go on a picnic.If it is cloudy,we will have to take a raincoat or an umbrella with us when we are leaving our houses.Whatever the weather may be,we tend to adjust our activities to it accordingly.In order to know what the weather will be,special people are hired to provide the information.They collect data,analyze them and predict the weather of the coming day.Such information,which is announced on the radio or on TV,is usually very accurate.Thanks to the efforts of those professionals,we can always know the weather in advance and get prepared for it.