用英文翻译这段话孩子们都喜欢在下午去湖里游泳。昨天下午，玛丽，杰克，海伦去湖里游泳。天气很晴朗。突然，一个苹果在湖中心出

The Sky is fine, children like to swim in the lake at the afternoon. Last afternoon, Mary,Jack and Helen swam together.Suddenly, an apple appanced in the center（centre 英式） of the lake. They swam to grab the apple. Jack used his own power to get the apple, ate it down smiley. However,they noticed many apples drifted down one by one. He ran to the class and shouted that “Mary, Jack and Helen found a lots of apple in the lake. There are small apples,"Iphone"and big apples,"Ipad"." All of students were noticed at him and distrusted him that "I don't believe it". Jim shouted "It is ture." Finally, the children believed it and decided to stage an apple party. Those made people to join in. Jim ran to the lake again and told them stage an apple party. Because of Iphone and Ipad, people were exciting at night. After all, Jack, Mary and Helen fetched out are apples- it can be eaten.
PS:另一个的翻译回答是错语法（grammar）啦！！
希望能够接受，但是有一些句子换位置，才能通畅。不便之处，敬请原谅。