课件14张PPT。Unit3 Spacestars The sun is bright. the sunIt’s huge. It's a star. (恒星)像太阳这样自己能发光发热的天体叫“恒星”。 the Earth像地球这样自己不发光的天体叫做“行星”。 It's a planet
（行星）.the moonIt is small .卫星就是围绕行星轨道上运行的天然或人造天体。It's a satellite
(卫星）. The sun is _____ than the Earth /the moon.
bigger
heavier
brighterThe sun is the _______ of the three.biggest
heaviest
brightestfarnear380,000km150,000,000kmnear380,000kmthe sun the moonthe EarthThe moon is ______ the Earth. The sun is _______ the Earth. near tofar fromThe Earth goes around the sun.
The moon goes around the Earth.Beijing is far from Guangdong.
Guangxi is near to Guangdong.Examples:Look at the map, make sentences.Sum up
the sun – a star
the Earth – a planetbright huge
far near The sun is huge.
The moon is near to the Earth.
The sun is far from the Earth.sentenceskey wordsAnswer the questions:
Which is the biggest, the sun, the moon or the Earth?
Which is the smallest, the sun, the moon or the Earth?
3. Is the sun a star?
4. Is the Earth a star?
5. Is the moon near to the Earth?
The sun.The moon.Yes, it is.No, it’s a planet.Yes, it is.Listen and read: Homework: 1.熟读A部分，要求背诵。 2.完成第一课堂A部分练习。
