小题1:学生参加一些社会活动是很有意义的。
小题2:我们都在期待即将到来的暑假。
小题3:谢谢你给我提供这么宝贵的建议。
小题4:我的叔叔离开家乡已经十几年了。
小题5:每年许多车祸都因开车不小心造成。
小题1:It is meaningful for students to take party in some social activities.
小题2:We are looking forward to the upcoming summer vacation.
小题3:Thank you for offering me so valueable advice.
小题4:My uncle has been away from his hometown for more than ten years.
小题5:Many accidents are caused by careless driving every year.
题目分析：
小题1:使用句型It is meaningful for sb to do sth；参加take part in；故该句翻译为：It is meaningful for students to take party in some social activities.
小题2:使用句型be looking forward to sth/doing;故该句翻译为：We are looking forward to the upcoming summer vacation.
小题3:该句使用句型thank sb for doing sth；给某人提供什么译为offer sb sth；故该句翻译为：Thank you for offering me so valueable advice.
小题4:该句翻译不能使用动词leave，因为leave为短暂性动词，不能和时间段连用，只能换成表状态的短语be away from his hometown；故该句翻译为My uncle has been away from his hometown for more than ten years.
小题5:“由……引起”译为be caused by…;该句要用一般现在时。故可译为：Many accidents are caused by careless driving every year.