Unit7 Global warming ： B Reading And Critical Thinking课件 2024-2025学年沪外教版（2024）七年级英语上册

英语 七年级 上册 Objectives & Tasks Getting ready Reading and critical thinking Grammaring Listening, viewing and speaking Writing Project Self-assessment Key words & Cool things to know Contents Global warming 7 Unit Objectives & Tasks Getting ready Reading and critical thinking Grammaring Listening, viewing and speaking Writing Project Self-assessment Key words & Cool things to know Contents Objectives & Tasks Getting ready Reading and critical thinking Grammaring Listening, viewing and speaking Writing Project Self-assessment Key words & Cool things to know Contents can describe the cause and effect of global warming Objectives Tasks can find out the effect of global warming learn new words about global warming practise the pronunciation of /tr/ /dr/ /l/ /r/ /w/ /ə/ /U/ sounds and word stress use the present perfect tense correctly read a blog post about the effect of global warming on an animal listen to a weather report learn about how a group of students deals with a climate problem Objectives & Tasks Objectives can communicate about how global warming changes our world Tasks can express our ideas on taking climate action by using should talk about the effect of global warming on our daily life do an experiment to model the greenhouse effect write an open letter on reducing our carbon footprint Objectives & Tasks Polar bears in a warming world The world is getting warmer and warmer. Have you ever thought about the effect of global warming on animals? Let’s read a blog post about what has happened to the polar bears in the Arctic. Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Green Journey Animals We use fuel for energy, but it is making the climate warmer. As a result, the ice melts, and the sea level rises. It is bad news for polar bears! Polar bears live in the cold Arctic. The frozen Arctic is their home and the ice is their hunting ground. A polar bear usually stands on the sea ice to hunt for seals when they come up for air. But the ice has started to melt earlier each year. As the ice melts, some polar bears have lost their homes. Homeless polar bears have to move from ice to land earlier and stay on Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Green Journey Animals land longer. They become very hungry because they can’t find enough food. These changes are a result of global warming. Global warming is making life difficult for polar bears. Their future is in our hands. We mustn’t let them down. Let’s save polar bears! Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Choose the best answers. 1 2 What is the main idea of the text? a Global warming is making our life difficult. b Using too much fuel can cause global warming. c Polar bears are in danger because of global warming. Why do you think the writer wrote this blog post? a To describe the climate of the Arctic. b To explain what global warming is. c To call for help to protect polar bears. Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Complete a polar bear’s message with the information from the text. I am a polar bear. I live in the 1 __________ with my family and friends. We 2 __________ the ice to hunt for food. Global warming is 3 __________ for us. Our world is getting warmer. As the ice melts, we have lost our 4 __________. We have to stay on land 5 __________. There is not 6 __________ for us, so we are always hungry. Please help us! cold Arctic stand on bad news home longer enough food Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Choose the sentences to complete the cause-and-effect chain. a Some polar bears have lost their homes. b The ice has started to melt earlier each year. c It is making the climate warmer. d The sea level rises. Subskill: Understanding cause and effect Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Complete the sentences with the words from the text. Use the first letters to help you. Suffix: -less The Sun gives us light and e_________ every day. Ice and snow m_________ in warm temperatures. If the ground is f_________, it has become very hard because the weather is very cold. If someone has no home, we say that he is h_________. If you s_________ someone or something, you help them stay away from harm or danger. 1 2 3 4 5 nergy elt rozen omeless ave Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Complete the passage about the Arctic with the words you wrote in B4. The Arctic is at the top of the world. It is a huge ocean with 1 _________ snow and ice all year round. Arctic animals like polar bears and arctic foxes usually have thick fur to keep 2 _________ in their body. One interesting fact is that many are as white as snow. That’s how they 3 _________ themselves. Sadly, as the Earth gets warmer, more and more ice is 4 _________, and it has made some animals 5 _________. frozen energy save melting homeless Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Seals are an example of why sea ice matters. Mother seals usually put their babies on ice to feed them before they can 1 __________ food by themselves. However, as the ice melts more quickly, the first six weeks of the seals’ lives are not 2 ____________ any more. They have to get into the cold water earlier. They may not find enough food to eat. Moving ice makes it hard for them to 3 ___________ for air. 4 ___________, seals are in great danger. If we don’t take action, we will 5 _____________. Complete the passage about seals with the correct forms of the words in the box. hunt for in their hands come up As a result let them down let them down come up in one’s hands hunt for as a result let them down come up in one’s hands hunt for as a result Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Review. Put the pictures in the correct order according to the blog post. 1 4 3 2 5 Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Understand. Here are more details about the effect of global warming on polar bears. Read the sentences and fill them in the table below. They need to swim much longer, sometimes up to 30 miles, to find seals. One bear lost close to 20 kilogrammes in just ten days. By 2050, two thirds of polar bears will disappear. A study shows that polar bears are losing their homes faster. “The effect on the bears is greater than we thought,” a polar bear scientist says. Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Type of supporting details Number Expert opinion They need to swim much longer, sometimes up to 30 miles, to find seals. One bear lost close to 20 kilogrammes in just ten days. By 2050, two thirds of polar bears will disappear. A study shows that polar bears are losing homes faster. “The effect on the bears is greater than we thought,” a polar bear scientist says. Add more details! Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B Apply. Choose one sentence from above and add it to the blog post. It can give readers one more strong reason to protect polar bears. (Answers may vary.) 在第2 段左后加入：They need to swim much longer, sometimes up to 30 miles, to find seals. 或者在第3 段的开头加入：The effect on the bears is greater than we thought,’ a polar bear scientist says. 或者在第3 段第2 句之后加入：By 2050, two thirds of polar bears will disappear. Text Word work Critical thinking Comprehension B1 B2 B3 B4 B5 B6 1 2 3 B 生活在变暖世界中的北极熊 人类使用化石燃料作为能源，也正因如此，导致了气候变暖。结果就是冰川融化、海平面上升。这对北极熊来说是个糟糕的消息！ 北极熊生活在寒冷的北极。这片极寒之地是它们的家园，冰层是它们的捕猎场。北极熊通常会站在冰面上，等海豹从海水里出来透气时捕猎它们。但是冰面开始融化的时间越来越提前，冰面一旦融化，部分北极熊就失去了家园。无家可归的北极熊只能提早移居陆地，并且在陆地上待得更久。因为无法获取足够食物，它们极为饥饿。 这些变化都是全球变暖的后果。全球变暖导致北极熊生活得更加艰苦。它们的未来掌握在我们手里，我们不能让它们失望。一起行动起来，拯救北极熊！ Translation 人类使用化石燃料作为能源，也正因如此，导致了气候变暖。结果就是冰川融化、海平面上升。这对北极熊来说是个糟糕的消息！ （Para.1） Translation 北极熊生活在寒冷的北极。这片极寒之地是它们的家园，冰层是它们的捕猎场。北极熊通常会站在冰面上，等海豹从海水里出来透气时捕猎它们。但是冰面开始融化的时间越来越提前，冰面一旦融化，部分北极熊就失去了家园。无家可归的北极熊只能提早移居陆地，并且在陆地上待得更久。因为无法获取足够食物，它们极为饥饿。 （Para.2） Translation 这些变化都是全球变暖的后果。全球变暖导致北极熊生活得更加艰苦。它们的未来掌握在我们手里，我们不能让它们失望。一起行动起来，拯救北极熊！ （Para.3） Translation 感谢您的耐心观看 82181.43 13322.399 33854.918 14576.259 $$