The earth moves around the sun,and the moon moves around the earth.When our part of earth turns to the sun,it’s day.When our part of the earth turns away from the sun.It is night.
The sun is much bigger than the moon.But sometimes the moon looks bigger than the sun,because it’s much nearer to the earth.
The sun is very bright.It gives out a very strong light.The moom llooks quilt bright,too.But it doesn’t give any light at all.It only reflects the light of the sun.
The moon looks much bigger and brighter than the stars.But actually the stars are much bigger and brighter than the moon.They look smaller than the moon because they ‘re much farther away from us.
參考答案:地球绕太阳运行，月球围绕地球运行。当我们所在的一面朝向太阳时，就是白天。而当我们所在的一面背向太阳时，就是黑夜。
太阳比月球大很多。但有时月亮看起来比太阳大，因为它距离地球更近。
太阳很亮，发出很强的光。月亮看起来也很亮，但是它并不发光，它只是反射太阳发出的光。
月亮看起来比星星大，比星星亮。但实际上，比起月亮，星星更大更亮。之所以他们看起来小，是因为他们离我们远。