1．Green is the color of nature and represents new life and growth．
2．Wearing red can help when you are having difficulty making a decision．
3．I colored the card blue to cheer you up．
4．The teacher often advises us to spend as much time as possible/we can reading English.
5．In the past, the children preferred walking to school to taking a bus.
1．The color of nature表示大自然的颜色，represent表示代表的含义，new life and growth表示新生命和成长的含义，故本句可翻译为Green is the color of nature and represents new life and growth．
2．主语穿红色应使用动名词wearing read，when可以引导时间状语从句，have difficulty doing表示做某事犹豫不决的含义，make a decision表示做出决定的含义，故本句可翻译为Wearing red can help when you are having difficulty making a decision．
3．Color sth+颜色表示把某物涂上某个颜色，表示目的使用动词不定时to do，cheer sb up标使某人振作或开心的含义，故本句可翻译为I colored the card blue to cheer you up．
4．Advise sb to do表示建议某人做某事，spend +时间+doing表示花费时间做某事，as much time possible表示尽可能多的时间，故本题可翻译为The teacher often advises us to spend as much time as possible/we can reading English.
5．Prefer doing to doing表示与……相比……更喜欢做某事，walk to school表示步行到学校的含义，take a bus表示乘公共汽车的含义，故本题可翻译为In the past, the children preferred walking to school to taking a bus.