since my childhood, i have met a large number of people, thus, among them, i've made quantities of friends. from merely little companions as a child, and bosom friends as a teenager, later on, a lot of acquaintances in my life. it seems like the standard of choosing friends of us is always changing. but whether how it changed, it is more important to choose friends that will help you when you need them than to choose friends that is capable of having fun with.why you two become good friends? from my own perspective, first because of the common interest and ambition, which will let you have the common topics and make progress from each other. once i met a school mate in my senior high two, since we two both like basketball and are the fans of the basketball player Kobe Bryant, besides, we tow have the similar personalities, less then three days, we became friends that can talk anything to each other. and until now, we are also in keeping in touch with each other. another example is in my college, i have three friends which all want to study abroad, and the same as me. so we soon get good friends. after that, we became a study team to study English together and now we all make great progress. i want to thank them because these times we are working hard and if there have not been for them, i couldn't insist it and would give up. the second reason might be the personalities. the characteristics of two friends must be similar or at least make them feel comfortable when they are together. if not, there will be quarrels between them. please also let me take myself as an example, unlike the girl who like basketball i've mentioned above, there is a girl i have met her for 6 years, and became friends since then, but day by day, her sensitivity made feel uncomfortable. she always said to me that a person must have only one best friend and she ask to have the only one, her, to be friend. i can't stand it, so we broke up and were far away from each other. and then i asked myself, what is true friends?  they must be the ones who are happy when you are successful and feel sorrow when you fail. it won't be awkward even though you two haven't meet each other for long time. and if you have a problem, she will try her best to help you, no matter it will cost her.the most difficult moment that i've ever have was when i prepared for the IBT. it became so hard for me since i'd never had a chance to talk in English for such a long time. i could barely open my mouth, let alone, how to cover the whole test within the time limitation. i feel rather upset and almost lose heart. my friend Jeremy saw me one day and she inspired me by saying that if i couldn't overcome the task, how could i survive in the States and make my dream come true? and she also suggested that i should make a well-organized plan to divide my goal into several little parts, which  are attractive and attainable. and just like that, i gradually had a faith in conquering this. day by day, the more i practiced, the more confidence i gained. in my heart, Jer must be my true friend in my whole life, and i will treat her with my heart, too.i'm not saying that we should choose friends in order to get something from them. in contrast, we must follow our heart to when choosing friends. but friends who can just have fun with you can access everywhere, while friends who can help you when you are in trouble may be only a few in you lifetime. not to say the friends who can help you can also have fun with you. i'm saying that compared with the friends who can only have fun with you, friends who can help you when you are in trouble is much more important.