1.Jupiter木星,  Saturn土星,  Uranus天王星,  Neptune海王星,  

The Solar System太阳系,  Milky Way Galaxy银河系,  

star恒星,  planet行星,  moon月亮,  gas气体,  close to接近,  

far from远离.

2.

Sun: Sun is a star in The Solar system. It is made of hot gas. It is very hot.

太阳：太阳是太阳系中的一个恒星，它是由热气体构成的。它很热。

Mercury: Mercury is a planet in The Solar system. It is made of rocks. It is the closest planet to the Sun. And it is the smallest planet in The Solar System.

水星：水星是太阳系中的一个行星。它由石头构成。它是离太阳最近的行星。它是太阳系里最小的行星。

Venus: Venus is a planet in The Solar system. It is made of rocks. It is the second closest planet to the Sun. And it is the hottest and the third smallest planet in The Solar System.

金星：金星是太阳系中的一个行星。它是由石头构成的。它是离太阳第二近的行星。它是太阳系中最热也是第三小的行星。

Earth: Earth is a planet in The Solar system. It is made of rocks and water. It is a planet with beautiful mountains, oceans, forests and rivers. There are many different kinds of animals live on Earth.

地球：地球是太阳系中的一个行星。它是由水和石头构成的。它是一个有漂亮的山，大海，森林和河流的行星。在地球上有许多不同种类的动物。

Mars: Mars is a planet in The Solar system. It is made of rocks. It is the second smallest planet in The Solar System.

火星：火星是太阳系中的一个行星。它是由石头构成的。它是太阳系中第二小的行星。

Jupiter: Jupiter is a planet in The Solar system. It is made of gas. It is the biggest planet in The Solar System.

木星：木星是太阳系中的一个行星。它是由气体构成的。它是太阳系中最大的行星。

Saturn: Saturn is a planet in The Solar system. It is made of gas. It is the second biggest and the third coldest planet in The Solar System.

土星：土星是太阳系中的一个行星。它是由气体构成的。它是太阳系中第二大而且是第三冷的行星。

Uranus is a planet in The Solar system. It is made of rocks, ice and water. It is the coldest planet in The Solar System.

天王星是太阳系中的一个行星。它是由石头，冰和水构成的。它是太阳系中最冷的行星。

Neptune is a planet in The Solar system. It is made of rocks, ice and water. It is the farthest planet to the Sun. And it is the second coldest planet in The Solar System.

海王星是太阳系中的一个行星。它是由石头，冰和水构成的。它是离太阳最远的行星。它是太阳系中第二冷的行星。

3.

…….. is ……….. than ……….

.....比......更.....

Jupiter is bigger than Saturn.

木星比土星更大。

Saturn is smaller than Jupiter.

土星比木星更小。

Jupiter is heavier than Saturn.

木星比土星更重。

Saturn is lighter than Jupiter.

土星比木星更轻。

Jupiter is hotter than Saturn.

木星比土星更热。

Saturn is colder than Jupiter.

土星比木星更冷。

Uranus is bigger than Neptune.

天王星比海王星更大。

Neptune is smaller than Uranus.

海王星比天王星更小。

Neptune is heavier than Uranus.

海王星比天王星更沉。

Uranus is lighter than Neptune.

天王星比海王星更轻。

Neptune is hotter than Uranus.

海王星比天王星更热。

Uranus is colder than Neptune.

天王星比海王星更冷。

Mercury is closer to the Sun than Venus.

水星较金星离太阳更近。

Venus is farther from the Sun than Mercury.

金星较水星离太阳更远。

Uranus is closer to the Sun than Neptune.

天王星较海王星离太阳更近。

Neptune is farther from the Sun than Uranus.

海王星较天王星离太阳更远。

4.

…………. is ………. the planet in The Solar System.

......是太阳系中......行星。

Jupiter is the biggest planet in The Solar System.

木星是太阳系中最大的行星。

Saturn is the second biggest planet in The Solar system.

土星是太阳系中第二大的行星。

Uranus is the third biggest planet in The Solar system.

天王星是太阳系中第三大的行星。

Mercury is the smallest planet in The Solar System.

水星是太阳系中最小的行星。

Mars is the second smallest planet in The Solar system.

火星是太阳系中第二小的行星。

Venus is the third smallest planet in The Solar system.

金星是太阳系中第三小的行星。

Jupiter is the heaviest planet in The Solar System.

木星是太阳系中最重的行星。

Saturn is the second heaviest planet in The Solar system.

土星是太阳系中第二重的行星。

Neptune is the third heaviest planet in The Solar system.

海王星是太阳系中第三重的行星。

Mercury is the lightest planet in The Solar System.

水星是太阳系中最轻的行星。

Mars is the second lightest planet in The Solar system.

火星是太阳系中第二轻的行星。

Venus is the third lightest planet in The Solar system.

金星是太阳系中第三轻的行星。

Venus is the hottest planet in The Solar System.

金星是太阳系中最热的行星。

Mercury is the second hottest planet in The Solar system.

水星是太阳系中第二热的行星。

Earth is the third hottest planet in The Solar system.

地球是太阳系中第三热的行星。

Mercury is the closest planet to the Sun in The Solar System.

水星是太阳系中离太阳最近的行星。

Neptune is the farthest planet from the Sun in The Solar system.

海王星是太阳系中离太阳最远的行星。