（2019新教材）外研版高中英语必修二 Unit 6 Earth first Developing ideas ppt课件（含视频）.zip

Unit 6 Earth first Developing ideas Watch the video and think about what should we do to protect the environment. Whats really green? Activity 1 Activity 2 Read the subheadings in the passage and decide if they are true or false. Activity 3 Devices turned off go into stand-by mode and still use power. 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. If you spend more than eight minutes in a shower, youll use as much water as in a bath about 50 litres of water. Think & Share 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”? Activity 4 Step 1 Use these questions to help plan your talk. Which “green truth” are you going to talk about? Why do people believe it is “green”? Why is it not completely true? What can you do to become “greener”? Activity 4 Step 2 Organise your talk following the steps below. l Start by stating the topic. l Describe your chosen “green truth” in more detail. l Explain why it is not completely “green”. l End your talk by encouraging your audience to become “greener”. Activity 4 Step 3 Give your talk to the class. Useful expressions: p Some people think because p However, it is not completely true because p Therefore, we should Explanation Whats really green? 哪些才是真正的环保做法? Most of us are aware that we must take care of the environment, and the majority of us take steps to save enengy and reduce waste and pollution. But recently,some“gren truths have been shown to be only half true, or even completely false. Here are some common ones. Which are really green? 我们大部分人都意识到要保护环 境,也采取了各种行 动节约 能源，减少浪费和污染。但是近来，一些“ 绿色环保真相”被证实 并非完全正确，甚至是无稽之 谈。下面列举了-些常见的环保观念，其中哪些是正 确的呢? ?Paper shopping bags arebetter than plastic ones. Plastic bags cause litter and are a danger to wild animals, which mistake them for food. It takes hundreds of years for plastic to break down, but much less time for paper Because of this, people think paper bags are the better environmental choice. 纸质购 物袋优于塑料袋? 塑料袋会变成垃圾，被野生动物误食后会对其造成 伤害。塑料需要数百年才能分解，而纸的降解时间 要短得多，因此人们认为纸 袋是更为环 保的选 择。 However, 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. In fact, both kinds of bags are bad for the environment. So, take a reusable bag with you when you go shopping. 然而，生产纸 袋的耗能为塑料袋的四倍，耗水则多 达三倍。其生产过 程也会产生更多的温室气体。 事实上这两种袋子都不够环 保，所以出门购物时 请带 -个能重复利用的袋子。 ?When you turn off a device, it stops using power. 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. This happens because electricity continues to leak from the device, even when it is turned“off. To make sure your appliance is in fact off, remove the plug from its power supply. 关掉的电器不耗电? 当我们关掉电视等电器时，它会进入待机状态。这种 状态下的电器仍然耗电，而且越旧的电器耗电越多。 这是因为电器即使已经被“关掉”了，却依然有电流从 电器中流失。为确保电器设备彻 底关闭，请从电源上 拔下电 器插头。 ?Eating local food is good for the environment. It seems like common sense: eating local food should be better for the environment, because it does not need to be transported long distances and kept cold during transport. Unfortunately, it is not that simple. It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases.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. 吃本地食物更利于环保? 这似乎已是人们常识性的认识:吃本地产的食物更环保,因为不需 要长途低温运输。然而事实并没有那么简单。相比于运输，食物 的生产过程才是消耗大部分能源及产生大部分温室气体的原因。 在有些情况下，即使将运输的因素考虑在内，本地的农产品也可 能比距离遥远的外地种植的农产品耗能更多，产生的温室气体也 更多。 ?Its better to take a shower than a bath. 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, youll use as much water as in a bath - about 50 litres of water. Therefore, the key is to keep your shower time as short as posible. 淋浴比泡澡更好? 这取决于你淋浴的时间 和你的浴缸大小。如果淋浴超 过八分钟，那么耗水量就和泡澡一样多-一大约为 五 十升水。所以，节水的关键在于尽量缩短淋浴的时 间。 Environmental awareness is now part of daily life. But its worth checking common ideas and opinions to see whats really green. 环保意识已经融入了人们的日常生活，但我们仍需 仔细辨别我们已经习 以为常的理念和观点中哪些才 是真正“绿色环保”的。 Homework