What can you see in the sky in the daytime？ The Sun！ It’s one part of the solar system.

The solar system is a family. It includes the sun and everything orbits around it. They are the eight planets， their moons and so on. Let’s have an amazing adventure through our solar system.

Tips：

include? 包含

orbit? 環(huán)繞

planet? 星球

moon? 衛(wèi)星

I am the sun. I’m a burning ball of fire. I’m very big. I can even hold a million Earths. Lives on Earth depend on me. I give them warmth and light.

Tips：

hold? 容納

million? 百萬

lives? 生命（life的復(fù)數(shù)）

Next， let’s meet the eight planets that orbit around the sun. Mercury， Venus， Earth and Mars are rocky planets， while Jupiter， Saturn， Uranus and Neptune are made of gas. Let’s have a look！

The Eight Planets：

Mercury? 水星

Venus? 金星

Earth? 地球

Mars? 火星

Jupiter? 木星

Saturn? 土星

Uranus? 天王星

Neptune? 海王星

I am Mercury. During the day， it is very hot on me. But I’m very cold at night.

I am Venus. I’m the same size as Earth， but I spin much more slowly. I’m the hottest and brightest planet in the solar system！

Tips：

spin? 旋轉(zhuǎn)

brightest? 最亮的（bright的最高級，brighter是比較級）

I am Mars. I have big volcanoes. It is very cold on me. I have a very high mountain. I’m 3 times higher than Mount Everest.

Tips：

volcano? 火山

times 介詞表示倍數(shù)，這里表示3倍Mount Everest 珠穆朗瑪峰

I am Jupiter. I’m the biggest planet and I spin the fastest. I’m the stormiest planet in the solar system.

Tips：

spin? 旋轉(zhuǎn)

fastest? 最快的

（fast的最高級，faster是比較級）

stormiest? 風(fēng)暴最多的

（stormy的最高級）

I am Saturn. I’m the second largest planet after Jupiter. I have colourful rings that go round and round.

Tips：

ring? 環(huán)

We are Uranus and Neptune. We are blue.