今天下雨后，我出去家门口看彩虹，我看到彩虹时，就数一数，我是要数彩虹有几种颜色，我数了数，数了七种颜色，我回家里问妈妈；
彩虹是七种颜色的吗？妈妈说：是。我就说：原来如此，现在我知道彩虹几种颜色了。
Today, after it rained, I went out to see the rainbow at the door of my house. When I ()saw the rainbow, I counted it. I wanted to count the colors of the rainbow. I counted seven colors. I asked my mother at home. Is the rainbow seven colors? Mom said: Yes. I said: I see. Now I know the colors of rainbow.
