Unit 2 Out of this world Period 2 Grammar and Usage （精讲课件）- 【上好课】高二英语同步精品课堂（译林版2020选择性必修第三册）  

Period 2 : Grammar and Usage 新牛津译林版选择性必修三 Unit 2 : Out of this world Contents Lead-in 1 Non-restrictive relative clauses 6 Reading 2 Applying the rules 4 5 Working out the rules Exploring the rules 3 Lead-in What is subject ? a noun, noun phrase or pronoun representing the person or thing ① that performs the action of the verb ②about which sth is stated ③in a passive sentence, that is affected by the action of the verb I sat down. The house is very old. The tree was blown down in the storm. Lead-in Underline the subjects of the following sentences. 1. David arrived last night. 2. How can we improve our English? 3. Looking up all the new words in the dictionary took him a lot of time. 4. To translate this ideal into reality needs hard work. 5. What has happened proves that our policy is right. 6. How we improve English is an important question. Lead-in What is Subject clause？ Subject clauses (主语从句) 在复合句中，如作主语的是一个从句，该从句被称为主语从句。主语从句必须用陈述语序。 Reading Do you know what they are? FAST (Five-hundred-meter Aperture Spherical Telescope) 500米口径球面射电望远镜，也被称为“中国天眼” Galileo telescope Reading Read the article on page 20 and fill in the following table. The use of telescopes to explore space Time Breakthroughs Use In 1990 (1) ______________ (2) ____________________ (3) __________ The Kepler Telescope (4)____________________ (5) ___________ (6) ________________ To detect communication signals between the stars in the universe The use of telescopes to explore space Time Breakthroughs Use In 1990 The Kepler Space Telescope In recent years To detect communication signals between the stars in the universe The Hubble Space Telescope To see further than ground-based telescopes; to play a crucial role in the discovery of the mysterious dark energy In 2009 FAST To search for Earth-size planets orbiting other stars Reading Exploring the rules Find the sentences with subject clauses in the article and fill in the box of part A on page 20. That Hubble is based in