作為雙奧之城，北京成功舉辦了夏季奧運會與冬季奧運會，這讓世界深刻認識了北京，也讓全民運動的熱情進一步高漲。假如你是李華，學校英語角舉行以"My Favorite Sport"為題的征文活動。請你根據以下要點，寫一篇英語短文投稿，內容包括：
1.介紹你喜歡的運動項目；
2.喜歡這一運動項目的理由；
3.做運動時要注意的事項。
注意：1.可適當增加細節，以使行文連貫；
2.詞數：不少于80詞。
My Favorite Sport______

【考點】提綱作文．

【答案】My Favorite SportAs a teenager，I like doing sports very much now，such as running，playing basketball and football.But my favourite sport is still swimming.
I used to be very lazy and fat.Because of this，I was often laughed by others.When I wanted to change my figure by doing strenuous exercise，my legs were damaged.At that time，my good friend Lily advised me to go swimming with her，for swimming can help us have a good figure but it is not strenuous.Under the guidance of her，I learned to swim and got slimmer gradually.
Swimming can make us strong and healthy，bringing a lot of happiness.But to keep us safe，we must not swim in the wild.Besides，before swimming，we should do some warm-up activities to avoid leg cramps when we are swimming.