Unit2 Sailing the Oceans reading 课件（27张）

课件27张PPT。高 三 Sailing The Oceans Zheng He (1405 --1433),with his treasure fleets , sailed westwards on voyages of trade and exploration. Words and expressions accomplished 完成的,有技巧的 return to 回到；恢复到 may well 很可能；充分理由 work out 计算，弄明白，锻炼 at the mercy of 受…支配,任 …摆布 accelerate the speed? 加快速度 ? Skim What ‘s the main idea of the text ? How many parts is the text divided into? It tells us how the sailors navigated well without modern instruments.It can be divided into 3 parts. Part1 ( para.1) Part2 (page1) part3 (para.3)raise a problemsolve the problemmake a summaryPart1 (para 1) What ‘s the fun_ction of the first paragraph? A. as a summary B. introduce the topic D. compare and contrast C. connecting link BCareful reading finish the blanks 1.We (很可能) wonder how seamen explored the oceans before latitude and longitude made it possible to plot the position of the ship. 2.The voyages of travelers before the 17th century show that they were not (任…摆布) the sea even though they did not have modern navigational aids. at the mercy ofmay wellThey were not “at the mercy of” the sea ,we can use to replace the phrase. with the help of under the control of by means of D. in need of BPart 2 (page1) The second paragraph is mainly developed by - A . giving examples B. classifying C. making definition D. giving figures （下定义） AUsing nature Celestial bodiesweatherseasunseaweedcloudswildlife coastlineNorth starbirdsfogwindsStructure chart True or False At the equator the North star is at its highest. 2. They can use the seaweed to get the direction. 3. In the morning ,nesting birds return to land . FFTnortheveningFill in the form They navigated well with the help of the followings.North star use the height of the sunFog carry ships to destinationreturn to land in the eveningDiscussion Suppose you were a captain aiming to sail round Africa. What skills would you seek in your sailors? 2. What problems would you anticipate for this journey? Part 3 (para. 3) 1.What’s the result of using the skills? 2. Can you guess what the text to write next ? The sailors explored the seas and discovered new landsIt will introduce some instruments. 1 2 4 3 5 6 7 8 9 1 5 9 3 7 4 6 2 8Make up a sentence using the phrase at the mercy of Home What’s the meaning of work out ? Make a sentence using it Home What’s the difference between may as well and may well ? Home Tell the difference be used to do be used to doing used to do Home “especially “can be replaced by Home Congratulations Home Read the words correctly encyclopedia accomplished navigational HomeCorrect the sentence She returned back to school. Home Translate the sentence into Chinese Seamen could follow the birds to land even if they were offshore and in the open sea.Home According to the text(语法填空) Before latitude and longitude made possible to plot a ship's position, the sailors were not at the (merciful)of the sea. Using nature to help seems to (be)the first and ... ...