英语 汉译英 我做了一些,如果在用词和语法发面有错误,还希望帮忙改正,

对的我就不打出来了
在过去的十年里,我的家乡已经发生了巨大的变化.（takeplace）
Inthepast tenyears, big changes have takenplace in myhometown.
十五岁他就成为有名的钢琴家了.He has become afamous pianistwhenhe was 15.
这本书是关于美国历史的.（about）
Thisbookisaboutthe history of the United States. (一般不用USA)
johnson先生去年教我们英语.mrjohnson taughtusenglish lastyear
奶奶昨晚给我们讲了一个有趣的故事.Ourgrandmothertoldusa funnystory last night.

我们要使学校变得更美丽.we should makeourschool morebeautiful
树叶已经变黄了.theleaves have turnedyellow
parents 应该是打错了吧
灯亮着,办公室里肯定有人.thelightison, there must be someone in the office.
我收到了笔友从澳大利亚寄来的信.i receivea lettterfrommy pen palwho lives in australia
【翻译一定要注意 时态 主谓一致这样的小问题 翻完之后自己要再看一遍】请问，我没写的那三个怎么翻译呢？这本书他读过多次了。He has read the book for many times.每天早晨给我们都听到他大声朗读英语。We canhear him reading English loudly every morning.天气预报说下午有大风。The weather forecast said that it will be windy this afternoon.学校定了一条规定，开始上课时学生要起立。Our school requests us to stand up before the class begins.