Unit 3 Lesson 1 & lesson 2 知识点 课件 2020-2021学年高中英语北师大版选择性必修第一册

选必一 Unit 3 L1-L2 知识点 1. How many times up to today has life on Earth almost died out? die out 消失，灭绝 The species(单复同形） has nearly died out because its habitat（栖息地） is being ___________ (destroy). The wind died away at dust. Many trees are dying off for _______ (lack/lacking) of water. destroyed lack 2. Extinctions, where entire species are wiped out, are not unusual in our Earth’s history. wipe out 彻底毁灭，抹去 wipe 擦 wipe away 擦去 wipe her eyes with a tissue 用...擦... wipe up 擦干 wipe the sweat from/off his forehead 从...擦去... The disease _________ (威胁) to wipe out the entire population. threatens 3.These include the third mass extinction, known as “Great Dying”, which killed 90% to 96% of all species. (1) adj. 大量的 mass _________ 批量生产 mass _________ 大灭绝 the problem of mass _____________ 大批人失业的问题 (2) n. 大量 （a mass of + C/U + 谓语复/单) A mass of books _____(be) distributed to Project Hope. There ______ (be) masses of people in the stores yesterday. mess n.肮脏，杂乱 messy ad