我爷爷在他七十多岁的时候开始对摄影感兴趣．
My grandpa became in photography ．
为了让大卫在学习上处于领先地位，他的父母对他要求严格．
David's parents are him to make him in study．
除非你在九月三日前更换你的护照，否则你将不得不放弃去美国的旅行．
You′ll have to the trip to America you have your passport changed before September 3．
《厉害了，我的国》不仅帮助我们更多了解我们的国家，而且让我们为祖国感到自豪．
Amazing china helps us learn more about our country． makes us proud of her．
那位老师给的建议是多么有价值啊!