高一英语unit-19-warming-up.pptVIP

知识复习 Unit 19 ⑴Do you know the difficulty he had (in) finding your house? have much/no/little difficulty (in) doing… have great problems (in) doing… ⑵Here is some advice you can keep in mind. keep…in mind 记住某事物 ⑶What effects will the changes in eating habits have on agriculture or nature? have an effect on… have a good/bad effect on… have some/little/much/no effect on… Our arguments had no effect on them. The medicine had an instant（即刻的、立刻的）effect on him. ⑷Special attention should be paid to looking after the baby. pay attention to… ⑸I have no fault to find with your work. 我对你的工作无可挑剔。 find fault (with) （对…）挑剔 ⑹Every possible use should be made of advanced technology. What use should be made of this material? make (good/the best) use of… warming up Sample answers for question 1: ① People are earning more money,so they want to buy and eat more meat. ② People learn more about healthy food, so they want to eat more fruit. ③ Eating fish does not make people as fat as eating meat, so people like eating more fish. ④When people eat more fish and meat,they need more oil to fry fish and meat,so more oil need to be made . Sample answers for question 2: ① People want more variety in their food, so farmers need to grow different things. (changes in demand) ②farmers want to make more money, so farmers change their produce from growing grain to fish farming or growing fruit. In the end, they will bring more fish and fruit to the market. (changes in supply) ③ If farmers produce more meat , they need more animal feed. Besides grass, they will also feed them grain, which other farmers need to grow more. ( changes in demand) Sample answers for question 3: If farmers need to raise more pigs, they need to feed the pigs more food. Next, farmers need to buy more grain to feed the pigs, so other farmers need to grow more grain. They need more land to grow more grain. They would destroy nature if farmers want to use more land. They may need to