(
课件网) Unit 2 Amazing numbers 主题范畴： 人与社会 主题群： 历史、社会与文化；科学与技术 子主题： 对世界、国家、人民和社会进步有突出贡献的人物；科学技术与工程，人类发明与创新 Key question What is the role of numbers in our daily lives use a line graph to record and present information, using correct numbers; provide a detailed description of how the population of a city / province changed over time; use the words and expressions I learnt in this unit. Learning objectives 学习目标 At the end of the class, I’ll be able to: New words and expressions province / pr v ns/ n. 省份 sharply / ɑ pli/ adv. 急剧地；突然大幅度地 go up 上升 go down 下降 Lead-in Do you know data visualization bar chart pie chart line graph May found some figures about traffic accidents in her city. She drew a line graph and wrote a report. Look at the line graph and answer the questions. 1. The line graph is about _____. 2. The vertical axis (纵轴) stands for _____. 3. The horizontal axis (横轴) stands for _____. 4. There were _____ accidents in July. 5. The number of accidents in August is _____. traffic accidents the month 208 234 the number of accidents Pre-writing Lead-in Writing Writing a report on population change Populations change in all areas over time. Do some research and write a report on population change in a city or province based on your findings. 1 Wang Yao is writing a report about the world population, look at the line graph she found and help her complete the report. Use the words and phrases below to help you. Growing numbers: rise (sharply, quickly, slowly), grow, go up, double Falling numbers: fall (sharply, quickly, slowly), drop, go down No change: stay the same, remain the same World population The graph shows that the population in the world (1)_____ before the year 1800. During the second half of the 1800s, the population began (2)_____. In 1850, there were about (3)_____ people in the world. About one hundred years later, the world population reached (4)_____. Between 1950 and 2000, the population more than (5)_____. In 2050, there will be more than (6)_____ people on our planet. grew slowly grew quickly 1.1 billion 2.5 billion doubled 9 billion ① The price of rice went up in March and it rose again in April. ② The population of the city went down in 2021 and it fell again in 2022. 1) 近义词：go up和rise；go down和fall rise的过去式rose，fall的过去式fell。 Useful expressions: 3月份大米价格上涨，4月份又上涨。 该市人口在2021年下降，2022年再次下降。 The temperature rose to 18℃. = The air conditioner raised the temperature to 18℃. 2) rise, raise都有“增加；提高”的意思。 但rise是不及物动词，raise是及物动词。 气温上升到18℃。 Useful expressions 数量增长 _____ 数量下降 _____ 数量不变 _____ 急剧增长 _____ 保持不变 _____ 19世纪下半叶 _____ growing numbers falling numbers no change rise sharply remain the same the second half of the 1800s 2 How has the population in a particular city or province ... ...
