You fall in love with my sister!
你爱上了我的姐姐.
是对的.
fall in love with sb,就是爱上了某人,固定词组
It's fun to run and jump in the sun.
他在阳光下欢快的跑着跳着.
是对的
The first person in a class shirt works in my firm.
那第一个人到我公司是做衬衣的.
上面的英文句子不对.不能判断.
Her younger brother's daughter was a driver.
她较小的弟弟的女儿{过去}是驾驶员 .
是对的.