Unit8 How do you make a banana milk shake Self-check&revision 教学设计 2022-2023学年人教版八年级英语上册

Unit8 How do you make a banana milk shake Self-check&revision 教学设计 教学目标：通过本讲，让同学们清楚明白并能正确辨析turn on/ turn off/ turn up/ turn down。使同学们在以后的做题中，不混淆混用。 教学内容：turn on/ turn off/ turn up/ turn down的区别及运用。 教学重难点：turn on/ turn off/ turn up/ turn down的辨析及运用。 教学过程: Step1. 本节导航 1. Turn on the blender. 打开食物搅拌器。 2. Turn off the lights, please. 请关灯。 3. Please turn up the radio. 请把收音机音量开大一些。 4. Please turn down the radio.请将收音机音量调小。 Step 2. 知识精讲 turn on 打开 (电视、收音机、灯、水、煤气等) 1. I want to turn on the television. 我想开电视。 2. Turn on the blender. 打开食物搅拌器。 3. Please turn the lights on for me, it's getting dark. 天黑了，请帮我打开灯。 比较turn on 与 open: turn on 与电源、动力相关 (指打开开关) open 作动词，也是“打开”，但与电源无关。通常指将原来关上或合上的东西打开。 1. He opened the window and looked out. 他打开窗户往外看。 2. She opened the book and began to read it. 她打开书开始读起来。 3. He opened a big box and took out a basketball from it.他打开一个大箱子，从里面拿出一个篮球。 turn off 关上;关掉;截断切断 (……的供应)，与 turn on 是反义词组。 1. I have to turn off the TV. 我必须关上电视机。 2. Please turn off the gas right now. 请马上关掉煤气。 3. Make sure to turn off the light before you leave. 临走前一定要熄灯。 比较: turn off 与close: turn off 与电源、动力相关(指关掉开关) close 也意为“关掉”，但与电源无关 1. If you are cold, close the window. 要是冷就把窗户关上。 2. Shall I close the door? 要我关上门吗? 3. If you close your eyes, you can't see anything. 若闭上眼睛，那就什么都看不见了。 turn up 开大，调高 (收音机、暖气等)(及物用法) 1. Please turn the radio up, I'd like to listen to the news. 请把收音机音量开大一些，我想听听新闻。 2. I will turn up the TV in the other room. 我去把另一个房间里的电视声音开大。 turn up 出现，露面(不及物用法) 1. They didn't turn up when the party was almost over.晚会快结束的时候他们才露面。 turn down减弱，调低 1. Please turn down the radio , I am trying to sleep. 请将收音机音量调小，我想睡觉了 2. He kept turning the heating down.他不断调低暖气的温度 3. Would you please turn down the TV a little? Jack is doing his homework. 请你把电视声音调小一点好吗?杰克在做作业。 turn down 拒绝，驳回 1. There's no reason to turn down this suggestion. 没有任何理由拒绝这个建议。 2. She turned down the invitation. 她拒绝了邀请。 Step 3. 易错点 turn on/ tur