(
课件网) Before you read—Prediction Humans have 5 senses to learn about the world around. We can sense a lot of things around us. Can trees sense like humans do What do you think Can trees feel heat and cold Can trees hear sounds Can trees notice the change of colours Can trees recognize directions such as up and down Can trees feel animals’ bites Discuss the questions with your deskmate and make predictions. What things do you think trees can sense Before you read—Prediction and discussion Let’s look at some more amazing facts about trees. Tree senses In the past, scientists didn’t know that trees could sense things. Now, they are discovering that trees can notice lots of things around them! Trees can sense many different things with their roots. For example, they can feel where “up” and “down” are. There is no light down in the earth, but the roots always know which way to grow. Trees can feel different temperatures. They know when to drop their leaves in autumn, and when to grow new leaves in spring. If an animal starts biting a tree of a certain species, the tree can find out what happens. For example, if a deer starts eating from a tree, the tree can make its leaves taste really bad after a while. Tree roots can sense different sounds. They really like the sound of running water when it is dry. If the sound continues for a long time, the roots will slowly start growing towards it. Trees can sense different kinds of light and colours. They know where the sun is, so their branches grow in that direction. That’s why trees in the northern hemisphere usually have more branches growing out on the south side. There are still many things we don’t know about trees. Scientists are working hard to find out more. Language notes 1. sense /sens/ v. 感觉到 Animals can sense an earthquake before it comes. 2. temperature /9temprRtSR(r)/ n. 温度 The temperature is too high today. 3. bite /baIt/ v. 咬 He was afraid that the dog would bite him. Read the article on page 48 about how trees sense things. Match the headings with the paragraphs. While-reading—Skimming and matching Tips: 1. Summarize the main idea of each paragraph. 2. Pay attention to the repeated words. c. Recognize “up” and “down” a. Feel heat and cold b. Recognize animals e. Sense sounds d. Sense light and colours How does the author support his / her argument in the following sentence While-reading—Reading for structure c. Recognize “up” and “down” By giving an example. (举例子) Read the rest of the article and underline the other examples. a. Feel heat and cold b. Recognize animals e. Sense sounds d. Sense light and colours Exposition (说明文) 常用写作手法： Giving examples (举例子) While-reading—Applying Two trees are talking. What might they talk about Tick the possible sentences according to what you’ve learnt from the article. Oh! I am under attack! There’s too much sun on the left. It’s so hot. My branches enj ... ...
