《Lesson　1　Water课件》初中英语新世纪版九年级上册课件62984.ppt

Riddle It has no colour. It can flow. We drink it every day. We call it liquid gold. It’s one of the most important natural resources in the world. Key: Water Water Second Period Scan and Order Water is limited. Water should be saved and protected. Water is important. Order:______ _____ ______ 3 1 2 Skim and Judge 1. Water is the most important natural resource in the world. 2.Water is important because almost no everyday tasks can be performed without it. 3.One-fourth of the Earth’s surface is covered with land. (F) (T) (T) one of the most important natural resources 4.Only a little of the world’s fresh water can be used in our daily lives. 5. Water is called liquid gold because it is as precious as gold. 6.With rapid population growth, less water is needed. more liquid gold. (T) (F) (F) Why is water important? Water is important because______________. Key words: one of the most important natural resources; drinking, recreation, farming, industry; few tasks, be performed Think and retell (paragraph 1) Learn and practice (paragraph 1) Water is used for…=Water is used to…(表示用途） Water is used in…(领域或方面） farming industry drink swim raise goldfish daily life Look at the pie chart about World’s water (paragraph 2) However, water resources are____________. Although ___________ of the Earth’s surface is covered with water, __ per cent of it is salt water in the sea. Only __ per cent of the world’s water is fresh water. But not all of the world’s fresh water can be used in our daily lives because __ per cent of it is ice and __ per cent is underground. Only __ percent of fresh water is available in lakes and rivers. Fresh water is so ________ that it is sometimes called liquid gold. three-fourths 97 3 70 25 5 Listen and Fill in (paragraph 2) limited precious Answer and retell 3/4 water; 97% salt water in the sea; 3% fresh water; 70% ice; 25 % underground; 5 % available in rivers and lakes; precious, liquid gold 1.Why is m