深圳牛津版英语七年级下Unit 5 Period 3.ppt

Unit 5 Oxford English Module 3 Natural elements Water Period 3 Grammar More practice B Presentation Can you tell us whywater is valuable? 1 Brainstorming 2 WAYS TO SAVE WATER Can you think of ways to save water? 3 More tips on saving water 1. Saving water at home bathroom kitchen laundry room In the bathroom * Install low-flow shower heads. * Take shorter showers. (Showers kept under 5 minutes can save you about 15 gallons per shower.) * If you take a bath, fill the bathtub less than halfway. (You can save 10-15 gallons per bath.) * Turn the tap off when you are brushing your teeth and washing your hands. Install a highly efficient flush toilet. … BACK In the kitchen BACK * Wash vegetables in a container, not under running water. Use the dishwasher for full loads only. … In the laundry room Use the washing machine for full loads only. … 4 Grammar Talking about quantities Do you know the differences between a lot of, a little, a few, (not) much, (not) many, and no? Read the following sentences to understand “a lot of”, “a little”, “(not) much” and “how much”. How much water is there on Earth? There is a lot of water on Earth. How much water is drinkable? Only a little water is drinkable. (There is not much fresh water.) Answer the following questions about quantities. How many books are there in your school? There are a lot of books. How many exercise books are there in your schoolbag? There are a few (not many) exercise books. Work out the rule Things to remember A Look at the pictures below and on page 64. Then complete the questions and answers. no water in the pool Grammar exercise a lot of water in the pool How much there are many people in the pool How many No, there aren’t many people in the pool. How many people are there in the pool? Learn about too much, too many, too little, too few and (not) enough. We can use too much, too many, too little, too few and (not) enough to talk about quantities. Work out the rule B Dora and Jane w