扩展句：1、as a member coutry, china can enjoy many rights that can boost the development of the economy in china.
　　2、what's more, the chinese people can buy productd of high quality with less pay.
　　第三段：表达反面观点
　　主题句：every thing has two aspects.
　　扩展句：1、joining the wto can also bring us some challenges. for example, some producers may be wiped out because of the intense competition.
　　2、in addition, it will be more difficult for us to get a job, as the requirement for the employees will become higher.
　　第四段：结尾，表明自己看法
　　结尾句：however, this great event does more good than harm to us.
　　扩展句：what we should do is to improve ourselves to become qualified for certain positions and live a better life.
　　第三部分、范文
　　china finally succeeded in jointing the wto after many's efforts.this event will influence the economy in china greatly.
　　jointing the wto brings china many benefits and opportunities.as a member coutry, china can enjoy many rights that can boost the development of the economy in china.what's more, the chinese people can buy productd of high quality with less pay.
　　every thing has two aspects.joining the wto can also bring us some challenges. for example, some producers may be wiped out because of the intense competition. in addition, it will be more difficult for us to get a job, as the requirement for the employees will become higher.
　　however, this great event does more good than harm to us.what we should do is to improve ourselves to become qualified for certain positions and live a better life.

英语作文
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