1. Hainan is a beautiful place with pure water and green mountains.1. 海南是一个美丽的地方，水质清纯、群山翠绿。2. Dragon boat races are held in Changmai every year.2. 龙舟赛每年都在昌迈举行。3. Robots will be wildly used to help with the house work in the future.3. 未来机器人将广泛被用于协助进行家务劳动。4. Listening to English tapes is a good way to learn English.4. 听英语磁带是学习英语的好方法。5. Please keep your mobile phone off during the concert.5. 音乐会期间请关掉手机。