意为：“做某事对于某人来说是怎样的。”
其中，to do sth.做真正的主语。It做形式主语，不译。
1. It is essential for us to keep healthy in our daily life.
对我们来说，在日常生活中保持健康是至关重要的。
2. It is meaningful for every student to take part in volunteer work.
对每个学生来说，参加志愿者活动是很有意义的。
3. It is valuable for teenagers to read more good books.
对青少年来说，多读好书是很有价值的。
4. It is wise for us students to listen to the teachers carefully in class.
对我们学生来说，上课认真听老师讲课是明智的。
5. It is necessary for children to help their parents with housework.
对孩子们来说，帮父母做家务是必要的。
6. It is helpful for us to develop good learning habits.
对我们来说，养成良好的学习习惯是很有帮助的。
7. It is polite for students to respect their teachers and parents.
对学生来说，尊敬老师和父母是有礼貌的。
8. It is important for everyone to protect the environment around us.
对每个人来说，保护我们周围的环境是很重要的。
9. It is useful for us to learn to work with others.
对我们来说，学会与他人合作是很有用的。
10. It is necessary for us to follow the school rules.
对我们来说，遵守校规是必要的。
11. It is helpful for children to ask for help when in trouble.
对孩子们来说，遇到困难时寻求帮助是很有帮助的。
12. It is great for us to do some sports to relax ourselves.
对我们来说，做运动放松自己是很棒的。
13. It is important for us to save water and energy in our life.
对我们来说，在生活中节约水和能源是很重要的。
14. It is necessary for teenagers to get enough sleep every day.
对青少年来说，每天有充足的睡眠是必要的。
15. It is meaningful for us to keep working hard and never give up.
对我们来说，坚持努力、永不放弃是很有意义的。
亲爱的，外面没有别人，只有你自己
