Unit 6 When was it invented SectionB（导学课件PPT）-【优翼·学练优】2021-2022学年九年级上册初三英语（人教版）

Unit 6　When was it invented? Section B(1a—1e) Ⅰ. 选词填空 crispy, sweet, salty, sour 1. I like eating ice-cream. It tastes__________ . 2. The soup isn’t__________ enough. Let’s add some more salt to it. 3. Lemons are a kind of__________ fruit. 4. Potato chips are really__________ and salty. 答案: 1. sweet　2. salty　3. sour　4. crispy 新知预测 Ⅱ. 句型填词 1. 薯片是无意中被发明的。 Potato chips__________ __________ __________ __________ . 2. 薯片是一个名叫乔治·克拉姆的厨师发明的。 Potato chips__________ __________ __________ a chef__________ George Crum. 3. 顾客认为土豆不够薄。 The customer thought the potatoes were not__________ ______. 答案: 1. were invented by mistake　2. were invented by; called 3. thin enough There is too much salt in the soup. It’s too salty. ____________________________________ 答案: salt是名词, 在其后+y, 变为形容词salty, 意为“咸的”。 探究学习 1. salty adj. 咸的 【语境领悟】 *The customer said they were not salty enough. 顾客说它们不够咸。 *You put too much salt in the soup and it’s too salty. 你在汤里放的盐太多, 它太咸了。 课本要点点拨 【自主归纳】 salty的用法 　　salty为形容词, 意为“咸的, 含盐的”, 是由“名词salt+-y”构成的形容词。 【归纳拓展】 “名词+-y”构成的形容词 　　在英语中, 很多名词后加-y可以构成形容词。例如: cloud—cloudy, wind—windy, rain—rainy, sleep—sleepy等。 【学以致用】 ①—Is the dish__________ (salt)enough? —Yes, it is. ②—What’s the weather like in Shanghai today? —It’s__________ (wind). 答案: ①salty　②windy 2. by mistake错误地; 无意中 【语境领悟】 *Potato chips were invented by mistake. 薯片是无意中被发明的。 *Sally deleted an important file by mistake just now. 萨莉刚才误删了一份重要的文件。 【自主归纳】by mistake的用法 　　by mistake意为“错误地; 无意中”, 是介词短语, 常在句中作状语。 【归纳拓展】 由mistake构成的其他短语 (1)make a mistake/make mistakes意为“犯错; 出错”, 是动词短语, 表示“在某方面犯错”用介词in。 I often make mistakes in grammar. 我常在语法方面出错。 (2)mistake. . . for. . . 把……错认成…… I mistook Lily for Lucy yesterday. 昨天我错把莉莉当成了露西。 【学以致用】 ①我错拿了你的钢笔。 I took your pen__________ __________ . ②别再出错了。 Don’t__________ __________ any more. 答案: ①by mistake　②make mistakes 3. in the end最后 【语境领悟】 *The customer was happy in the end. 顾客最后很高兴。 *He tried many times, and finally succeeded