Unit 2 More practice, Culture Corner & Projec课件2023-2024学年沪教牛津版（广州沈阳通用）八年级英语上册

Lead in How do little kids usually count numbers? How do Chinese people count with fingers? How do Western people count with fingers? Count with their fingers. Questions: What do people count before numbers? 3 tokens made from clay or small stones fingers and toes marks on sticks and bones b a c d the Hindu-Arabic system While-reading Read the article again and then complete the flow chart about the development of counting methods. their fingers and even their toes small marks on sticks and bones tokens made from clay or small stones systems of written marks the Hindu-Arabic system However, they could only count small numbers in this way. This helped them count bigger numbers. This helped them count even bigger numbers. by using their fingers and even their toes Making small marks on sticks and bones Using tokens made from clay or small stones Find the facts 8 This developed into tools like the abacus. … and this led to the Hindu-Arabic system (0—9). We are still using this system today. Putting the tokens on pieces of string developing systems of written marks the Hindu-Arabic system 9 Make a mindmap small marks on sticks and bones tokens made from clay or small stones systems of written marks Counting before numbers fingers and toes Mind Map Post-reading 1. They used them to count things like the days of the month, the amount of food and the number of animals they had. 人们利用它们来数数，像每个月的天数，食物的数量还有他们所拥有的牲畜的数目。 amount 用作名词，意为“数量；总额”，通常用于a (great / large) amount of 短语中，表示“大量；许多”，其后通常接不可数名词。例如： He made a large amount of money. 他赚了很多钱。 注意the amount of 和the number of 的区别： 这两个短语都表示“……的数量”，其区别在于:前者与不可数名词连用，而后者与可数名词的复数形式连用。例如: 1. The amount of rain affects the growth of crops. 降雨量影响农作物的生长。 2. The number of tigers has reduced sharply in the last fifty years. 在过去的五十年里，老虎的数目锐减。 而a (great / large) amount of 和a (great / large) number of 都表示“大量；许多”，其区别在于前者与不可数名词连用，而后者与可数名词的复数形式连用。 例如： 1. A large amount of money was spent on books. 一大笔钱花在了购买图书上。 2. A