Unit6 Earth first Developing ideas Reading课件 2025-2026学年高一英语外研版必修第二册

What’s really green? Look at the questions about “green living” and tick your answers. 1. Which shopping bag is more environmentally friendly? □ A plastic bag. □ A paper bag. □ Neither of these. 2. What should you do to save energy when leaving your home? □ Turn off a device. □ Unplug a device. □ Neither of these. n. 设备，仪器，装置 3. What food is better for the environment? □ Food produced near to where you live. □ Food produced far from where you live. □ It depends. 4. Which uses less water? □ Taking a bath. □ Taking a shower. □ It depends. Now work in groups and see if other people share your ideas. Read the four subheadings in the passage and decide if they are true or false. Learning to learn As subheadings expand on the main heading or title, they can be slightly longer than the main heading. Although not every paragraph needs a subheading, they can be skimmed to give the reader an overall understanding of the content of a text. te More than one cause may be responsible for any given effect. Therefore, cause-and-effect discussions are often complicated and frequently lead to debates and arguments. Cause-and-Effect something that produces an event or condition the results from an event or condition purpose? to determine how various phenomena relate in terms of origins and results Discuss the causes and effects of global warming Explain the high death rate in Chernobyl Discuss the WTO and its effects on the Chinese economy Sometimes, the essay will discuss cause and effect separately. Look at the examples below and determine their types. ['cause and effect'] ['causes' only] ['effects' only] Which type of essay is this text? ['cause and effect'] te Structure te X is used to indicate a cause, while Y is used to indicate the effect. transition signals Cause The first/next cause/reason of (Y) is (X) Because of (X), (Y) As a result/consequence of (X), (Y) because/since/as (X) to result from (X) (X) results in (Y) to be the result of (X) (Y) is due to (X) Owing to (X), (Y) (Y) is because of (X) (Y) is the effect/consequence of (X) Effect The first effect/result of (X) is (Y) As a result/consequence, (Y) Consequently (Y) Therefore, (Y) Thus, (Y) Hence, (Y) (X) results in (Y) (X) causes (Y) (X) has an effect on (Y) (X) affects (Y) (X) is one of the causes of (Y) (X) is the reason for (Y) ? Paper shopping bags are better than plastic ones. ? When you turn off a device, it stops using power. ? Eating local food is good for the environment. ? It’s better to take a shower than a bath. true or false？ Green Truth False. Making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water. The process also produces more greenhouse gases. ? Paper shopping bags are better than plastic ones. In fact, both kinds of bags are bad for the environment. So, take a reusable bag with you when you go shopping. ? When you turn off a device, it stops using power. False. When we turn off a device, such as television, it goes into stand-by mode. Devices in this mode still use power, and older devices in stand-by mode can use even more. To make sure your appliance is in fact off, remove the plug from its power supply. ? Eating local food is good for the environment. Apart from the transport, we should take the production of food into account. False. In some cases, local produce might have used more energy and produced more greenhouse gases than produce grown a long way away — even taking into account its transport. ? It’s better to take a shower than a bath. False. It depends on how long you spend in the shower and how large your bath is. If you spend more than eight minutes in a shower, you’ll use as much water as in a bath — about 50 litres of water. The key is to keep your shower time as short as possible. Read the passage fast and try to figure out the structure of it. Introduction Conclusion Body green truth 1 green truth 2 green truth 3 green truth 4 1. Making a paper bag uses more energy and water than making a plastic bag. It also produces more greenhouse gases. P.70 Exercise 3 2. Devices turned off go into stand-by mode and still use power. 3. Local produce sometimes might use more energy and produce more greenhouse gases than produce grown a long way away – even taking into account its transport. 4. If you spend more than eight minutes in a shower, you’ll use as much water as in a bath — about 50 litres of water. Read the passage and answer the questions. 1. Which of the “green truths” surprises you most? Give your reasons. 2. Are you aware of any other “green truths” that are not true? Share them with the class. 3. How “green” are you? Share your “green actions” with the class. 4. What can you do to become “greener”? Language Points 1. aware adj 知道；意识到 be aware of sth be aware that … He was well aware of the problem. 他很清楚这个问题。 Were you aware that something was wrong? 你有没有意识到已经出了问题? awareness n 意识 raise / increase / promote one’s awareness of sth 提升某人对某事的意识 2. break down 出故障； 失败；分解；崩溃失控 The car broke down. Talks with business leaders broke down last night. The analysis shows that plastics, particularly those that break down fast, are contributing to the climate change. If Tim carries on working like this, he’ll break down sooner or later. Because he was being so kind and concerned, I broke down and cried. 出故障 失败 分解 垮掉 失控痛哭 break down 出故障；失败；分解；崩溃分解 break up （关系）破裂，结束；解散；放假 break in破门而入，打断 break into破门而入，突然……起来 Hearing the sad news，the old woman broke into tears. break out战争爆发，争吵爆发,（火灾）发生 break away from打破陈规；奋力挣脱；放弃习惯 break through 出现，突破 break forth突然发出，爆发，迸发 break one's word/promise食言， 说话不算数 I believe in him，because he never breaks his word / promise. break the law/rule违反法律/规章制度 break the record打破纪录    break one's heart使某人心碎，使某人悲痛欲绝 To tell you the truth， the bad news broke my heart at that time. 3. worth adj 值……的 一位本地珠宝商说这颗珍珠至少值500美元。 A local jeweller says the pearl is worth at least $500. 他已经决定去看一下那所房子，看看是否值得买。 He’s decided to get a look at the house and see if it might be worth buying. 我花了很多钱和时间在这艘船上，但这样做值得。 I am spending a lot of money and time on this boat, but it is worth it. 4. make sure≈ensure 确保，保证 Assure 作用对象：一个人、一组人或一个动物，消灭对方的疑虑或担心 assure只可以对有生命的个体使用 eg. Pitt assured Jolie that he'd come to the party early. Ensure Ensure指的是你做一件事来保证一件事（会发生）或情形（会是这样） eg. To ensure there'd be enough food, Jolie ordered twice as much food as last year. Insure Insure一般被限定于财产责任层面，更常用于“获得保险”的意义。 eg. Brad wondered if the party were insured against loss. tips: 只要对象是有生命的东西，我们就可以使用assure；assurance 如果对象是一个事件或情形，则用ensure；如果是在一个跟经济挂钩的情境下，可以对任何宾语使用insure。insurance assure a- ① off/from anew adv. 重新 ②in/on asleep adj.睡着了 ③without/not atom n.原子 a-（not）+-tom(tomos 分开) 1. the majority of ___________________ 2. mistake … for ___________________ 3. make sure ___________________ 4. common sense ___________________ 5. take … into account ___________________ 6. depend on ___________________ ……的大多数 把……错认为 确保 常识 把……考虑进去 取决于；依赖；依靠 1. It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases. 强调句型：It is / was + 被强调部分（通常是主语、宾语或状语）+ that / who（当强调主语且主语指人时可用 who）+ 其他成分。 — Were all three people in the car injured in the accident? — No, ___ only the two passengers who got hurt. A. it was B. there is C. it were D. there was 3. It was _____ he said _____ disappointed me. 2. It was in the small house built with stones by his father ______ he spent his childhood. that what that A Exercise: 2. In some cases, local produce might have used more energy and produced more greenhouse gases than produce grown a long way away — even taking into account its transport. 长难句分析： 1）more … than … 比……更…… 2）produce 除了可以用作动词，意为“制造，制作”外，还可以用作名词，意为“农产品”。 The drug is known to produce side-effects in women. (v) 在某些情况下，即使考虑到运输因素，本地农产品可能比外地农产品消耗更多的能源、产生更多的温室气体。 2. In some cases, local produce might have used more energy and produced more greenhouse gases than produce grown a long way away — even taking into account its transport.  make or create sth We manage to get most of our produce in farmers’ markets. (n) 我们设法在农贸市场弄到我们需要的大部分农产品。 The OPEC countries produce about 40 percent of global oil. (v) 2. In some cases, local produce might have used more energy and produced more greenhouse gases than produce grown a long way away — even taking into account its transport. 3) grown a long way away 作后置定语 … produce grown a long way away … … produce that is grown a long way away … Homework $