Unit 7What’s the highest mountain in the world?Section A 1a-1c八年级(下)Let’s play a game.Rules:Stand up.Count the numbers from one to one hundred. The student who pauses have to sit own. The students who stand to the end are the winners.7 seven77 seventy-seven777 seven hundred and seventy-seven777,777 seven hundred and seventy-seven thousand, seven hundred and seventy-seven777,777,777 seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven777,777,777,777 seven hundred and seventy-seven billion, seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-sevenSum up:0-12特殊；13-19后加teen，整十后加ty, 十位与个位间加连字符“-”，百位与十位间加and。 从数字的右端向左端数起，每三位数加一个逗号，自右向左第一个逗号前加 thousand，第二个逗号前 加million，第三个逗号前 加billion，逗号间按百位数来读。QomolangmaIt is 8,844.43 meters high.6,671 kilometers long1,025 meters deepThe Caspian Sea（里海）9,600,000 square kilometers in sinow.about 9,600,000 kilometers long the Caspian Seathe Nilethe Sahara8,844.43 meters high6,671 kilom |
