小题1:The DiaoYu islands have belonged to China since ancient times.

小题2:It’s quite necessary to take more actions to prevent the earth from  pollution /being polluted.

小题3:They didn’t change their unhealthy lifestyle until they got sick/ill.

小题4:There are three parts of moonlight in the world, and two parts of them are in Yangzhou./ Of all moonlight in the world, two thirds of them are found in Yangzhou./ If the beautiful moonlight can be divided into three parts, two parts will be in Yangzhou./Of all three parts of moonlight in the world, two belong to Yangzhou without doubt.

小题5:I wondered when you arrived/came/got home last night.

题目分析：

小题1:“属于”是belong to。“自古以来”是since ancient times。根据时间可知，本句应用现在完成时。所以本题应是The DiaoYu islands have belonged to China since ancient times.

小题2:“做某事是怎样的”的句型是“It is +形容词+to do sth”。“采取更多的措施”是take more actions；“阻止某事的发生”是prevent  from。所以本题应是It’s quite necessary to take more actions to prevent the earth from  pollution /being pollute.

小题3:“直到…才”是not…until；不健康的生活方式是unhealthy lifestyle。所以本题应是They didn’t change their unhealthy lifestyle until they got sick/ill.

小题4:本句的汉语意思是“如果将世界上的月光分成三份，那么扬州就占到两份。”故本题的答案可能就是There are three parts of moonlight in the world, and two parts of them are in Yangzhou./ Of all moonlight in the world, two thirds of them are found in Yangzhou./ If the beautiful moonlight can be divided into three parts, two parts will be in Yangzhou./Of all three parts of moonlight in the world, two belong to Yangzhou without doubt.

小题5:根据句中的时间可知，本句应该是过去时；“想知道”是wonder；“到家”是arrived/came/got home 。所以本题的答案是I wondered when you arrived/came/got home last night.

点评：对于汉译英的题目需要注意三点：一是注意时态语态；二是注意固定短语的用法；三是符合英语的表达结构。就本题而言，第4小题由于是一句诗，这可能增加的一些难度，做起来并不容易。