Unit 4 Topic 2 Section C 导学案 2023-2024学年仁爱科普版英语九年级上册

2023年秋季学期九年级英语导学案 Unit 4 Amazing Science Topic 2 I’m excited about the things that will be discovered in the future Section C 【学习目标】 1.让学生初步了解火星的相关知识。 2.继续学习被动语态。 3.掌握在原级比较中表示事物之间倍数关系的句型 【自学新词汇】 1、 拼读下列单词并记忆。 solar /'səʊlə(r)/ system 太阳系 Roman /'rəʊmən/ adj.古罗马的,古罗马帝国的 god /gɑːd/; /gɒd/ n.上帝;神 diameter /daɪ'æmɪtə(r)/ n.直径 storm /stɔː(r)m/ n.风暴,暴(风)雨 gravity /'grævəti/ n.重力;引力 weigh /weɪ/ v.重,有……重 generally /'dʒenrəli/ adv.一般地,通常 journey /'dʒɜː(r) ni/ n.(尤指长途)旅行 limit /lɪmɪt/ v.限制,限定 n.限度；限制 excitement /ɪk'saɪtmənt/ n.激动;令人激动的事 2、 3、 在文中找出下列短语并记忆。 1.太阳系solar system 2.以……命名;根据……命名be named after 3.搜寻 search for 【重点句型】 1.火星的直径是地球的53%。 Its diameter is 53% as wide as that of the earth. 2.火星在距离太阳2.28 亿千米的轨道上绕行。 Mars goes around the sun at a distance of about 228 million kilometers. 3.火星表面的重力大概是地球的2/5。 The gravity on the surface of Mars is about two-fifths as strong as it is on the earth. 4.火星与地球相距最近时，宇宙飞船需要八个月才能从地球抵达火星。 It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other. 【知识点讲解】 1.... is named after Mars, the Roman god ofwar.火星以罗马战神的名字 Mars命名。 name …after 以……命名；给……取名。 benamed after 是被动语态。 Eg:The young couple named their baby after Jim.这对年轻夫妇以吉姆的名字给他们的婴儿取名。→The baby was named after Jim.这个婴儿被取名为吉姆。 2.Mars goes around the sun at a distance of about 228 million kilometers.火星在相距大约两亿两千八百万千米的地方绕太阳旋转。 ①go around 围绕……转 Eg:The moon goes around the earth.月亮围绕地球转。 ②at a distance of 相隔…… at a distance 在远处 Eg:The police followed the thief at a distance.警察远远地跟踪那个小偷。 3. You can tell which planet is Mars because it is bright red in the night sky.你能分辨哪颗行星是火星，因为它在夜空中呈现出鲜红色。 tell 此处为“辨别,区分”,常与情态动词 can,could, be able to 等连用。 Eg:Can you tell the differences of the twins? 你能分辨这对双胞胎的区别吗? 拓展：tell good from bad 区分好坏，辨别是非 4. The gravity on the surface of Mars is about two-fifths as strong as it is on earth.火星表面的引力大约是地球表面引力的2/5。 two-fifths as stro