Unit 1 Has it arrived yet?1. To listen and understand the conversation about space travel2. To learn some key words and useful expressions 3. To learn to use present perfect tense with “just”, “yet”, “already”Objectives :1. To listen and understand the conversation about space travel2. To learn some key words and useful expressions 3. To learn to use present perfect tense with “just”, “yet”, “already”Objectives :Words and expressions n. 地球 n. 月亮;月球 n. 新闻;消息 n. 行星 v. 到达;抵达 adv. 还;尚(用于表示某 事在某一段时间尚未 发生,但未来也许会 发生)earth moon news planet reach yet Words and expressionsjust model spaceship project no problem latest adv. 刚才;刚刚 n. 模型 n. 航天器;宇宙飞船 n. 计划;工程;项目 没问题(用于表 示乐于做某人要 求做的事) adj. 最近的,最新的 on discover astronaut space travelWords and expressionsprep. 在(播放) 中;关于…… v. 发现;找到 n. 宇航员 n. 航天旅行What do you think of when we talk about space travel?SunEarthMoon Marsspaceship航天器;宇宙飞船space station太空站rocket火箭Mercury 水星Earth 地球Mars 火星Saturn 土星Neptune 海王星Venus 金星Jupiter 木星Uranus 天王星Pluto 冥王星Listen and number the words as you hear them. 71 earth land message moon news planet reach scientist1253648Listen again and complete the notes.☺ news about the trip to (1)_______☺ journey of (2)_______ months☺has not sent back any (3)________ yet☺hope to find (4)______on Mars Mars eight messageslifeHas any spaceship reached Mars?Please listen to the dialogue!MarsMarsListen and choose the best answers.1. Tony has made a model of the ________. A. spaceship B. spacecraft C. space shuttle2. Have the astronauts discovered life on Mars? ________ A. Yes, they have. B. No, not yet. C. Yes, they did.ABRead...