陕旅版四年级下册英语Unit 3 Is it snowing -Part B-ppt课件-(含教案+视频)-公开课-(编号：200e0).zip

动词的现在分词 直接加ing: 去掉e加ing: 双写末尾的辅音字母加ing: 抢答最我快 1、大声说出现在分词。 2、拼写现在分词。 swim take sleep run dancecome stop cook write sit jumpeat Letsreview cloud云 wind风 snow雪,下雪 sky天空 Letsreview cloud云 snow雪,下雪 sky 天空 wind风 A:Whataretheydoing? B:Theyarerunning. A:Whatisshedoing? B:Sheisswimming. Unit3Isitsnowing? PartB 陕旅版四年级下册 Learningaims 1. 能借助所学关于天气的词汇进行简单的交流 和表达。 2. 掌握祈使句的用法及句式。 Lets learn more Mom,lookatthe suninthesky!And thereisnocloud. Alice,please takearaincoat. Butthereisa wind! Oh!Itsraining. Letstakeout ourraincoats! OK.Lets putthemon. Languagepoints 1.Alice,pleasetakearaincoat.爱丽丝，请带上雨衣。 用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句 ，祈使句因对象（即主语）是第二人称，所以通常都省略。祈使句 的肯定式通常以动词原形或let开头。 例句: 请坐！ Sitdown,please. 咱们去购物吧！ Letsgoshopping. 拓展：祈使句的否定式有以下三种形式 1.Dont+动词原形 2.No+动词ing 3.No+名词 Dontopenyourbooks. Nosmoking! Nophotos！ 不要打开你们的课本。 禁止吸烟！ 禁止拍照！ Languagepoints 2.Letsputthemon. puton“穿上、戴上”，强调“穿”“戴”的动作， 后接衣服、鞋帽等。 例句：这是你的大衣，穿上它。 注：代词作宾语放在动词短语中间。 Languagepoints 选择正确的单词填空 1.Please_(looks/lookat)thepicture. 2.Itiscold,dont_(puton/takeoff)yourcoat. 3.Thereis_(no/not)studentontheplayground. 4.Look,they_(plays/areplaying)games. 后跟宾语时用介词at 句首有look或listen时用现在进行时 takeoff lookat no areplaying 【学以致用】Exercise no=nota Unit 3 Is It Snowing? Part B Learning aims: 1. Can listen, speak, read and write new words: rain, snow, cloud, wind, sky, raincoat, glasses. 2. Can use the key sentence structure freely. 3. Can describe the weather conditions. Teaching tools: tape; PPT; raincoats. Teaching stratagies: cooperation; discussion; independent inquiry. Teaching procedures: Step one: 1. Daily greetings. 4. Students free talking. 5. Sing the song “What are you doing?”. Step two: Leading-in 1. Make a revision. Review the new words and the key sentence structure: A: “What + be + S + doing? B: S + be + doing + else.” 2. Show the title. 3. Show the learning aims. Step three: New teaching 1. Listen to the dialogue and know what happened in the story. 2. Students read the dialogue by themselves, then discuss their problems with their partners. 3. Ask students to read the dialogue and translate them into Chinese. The teacher correct their problems. 4. Students read the dialogue after the video, then practice the dialogue in groups for four minutes. 5. Some groups act the dialogue out before the class. The teacher encourage students in time. 6. Show some language points on the PPT, The teacher explain the uses. Step four: Do some exercises and strengthen the key points. Step five: Summery Step six: Homework