人教版英語高中必修三Unit 4 Astronomy the science of the stars Usinglanguage 課件(共21張PPT)

Unit 4 Astronomy the science of the starsUsing language Do you know the following scientists? Who are they? What have they discovered? Listening and discussing Isaac Newton,牛 頓 16421727 Universal gravitation 萬 有 引 力 Einstein, Albert (1879-1955) 愛 因 斯 坦Relativity（ 相 對 論 ） and the Cosmos （ 宇 宙 ） The theory about black holes （ 黑 洞 理 論 ） Listen to Part 1 and Part 2 of the tape and choose the best summary of the listening text. A The text is about how three scientists wanted to find out about the beginning of the universe.B The text is about how the idea of gravity has developed over a long period of time.C The text is about the importance of three scientists and their work. Isaac Newton IdeaDevelopment Large bodies have a force which pulls things towards them.The bigger the object the stronger the gravity.Listen to Part 1 again and fill in the first column of the chart. Then listen to Part 2 again and fill in the rest.IdeaDevelopment Albert Einstein Stephen HawkingIn space large objects make space and time bend; the larger the object, the further space and time bend. Black holes have a very large mass and pull things towards them.If you go over the edge, you cannot get out; but if you do not, you may be able to escape.Time goes slower in very strong gravity. Reading A VISIT TO THE MOON Read the whole passage and answer the following questions. How many times would the force of gravity change on our journey? Why is the spaceship not falling back to he earth?1.What happened when the writer tried to step forward?He found he was carried twice as far as the earth and fell over.Fast reading Because they are too far from the earth to feel its pull.Three times. Important sentences and language pointsCareful reading 1. I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger. cheer up : 歡 呼 ， 喝 彩 ， 感 到 高 興 ， 使 高 興 。當 看 到 球 隊 的 到 來 ， 人 群 歡 呼 起 來 。_ when they saw the team arrive.他 帶 她 去 聽 音 樂 會 來 使 她 高 興 。He took her _ to _.The crowd cheered upto the concertcheer her up watch do/doing :觀 看 ， 注 視 我 們 看 著 太 陽 正 在 樹 后 面 落 下 。We _ behind the trees. 每 一 天 當 他 們 看 到 植 物 生 長 ， 他 們 的 心 里 都充 滿 了 希 望 。Every day as they _ , their hearts filled with hope. watched the sun settingwatched the plant grow 2. Oh dear, I cried, walking does need a bit of practice now that gravity has changed. now that :既 然 ， 由 于既 然 每 個 人 都 到 了 ， 我 們 就 可 以 開 始 會 議 。_, we can begin the meeting.由 于 你 是 一 個 大 男 孩 ,你 就 必 須 行 為 表 現(xiàn)得 更 好 ._, you must behave better.Now that everybody is hereNow that you are a big boy 3. We watched, amazed as fire broke out on the outside of the spaceship as the earths gravity increased. amazed 是 過 去 分 詞 ， 此 處 做 狀 語 用 他 進 來 的 時 候 沒 有 人 注 意 到 .He came in _ .break out (戰(zhàn) 爭 ,爭 吵 ,疾 病 等 )爆 發(fā)在 深 夜 ,突 然 有 人 吵 架 ._ suddenly at midnight.A quarrel broke outunnoticed HomeworkReview the reading materials.Find out the beautiful sentences in this unit.