七年级英语下册_Unit6_It's_raining (2).ppt

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1、Unit 6 Its rainingHow much do you know about the weather？The beginning：温室气体大气层中易吸收红外线的气体，在大气中含量不足1%，主要包括二氧化碳，甲烷，一氧化二氮，氯氟碳化合物及臭氧。二氧化碳被认为是效果最显著的温室气体，并且近几十年来人类的工业化活动加剧了二氧化碳的排放量，导致了温室气体在大气中的过量聚集，加剧了温室效应。全球气候变化的证据自自1919世纪末以来，地球平均表面温度已经上世纪末以来，地球平均表面温度已经上升了升了1 1华氏度（华氏度（0.30.30.60.6）过去的过去的4040年中，即数据最为可靠的一个阶

2、段，年中，即数据最为可靠的一个阶段，温度大约上升了温度大约上升了0.50.5华氏度（华氏度（0.20.20.30.3）。）。在在2020世纪，温度上升的幅度比过去世纪，温度上升的幅度比过去400400600600年间的任何时候都要大。年间的任何时候都要大。19981998年，由于一次最强的厄尔尼诺现象，使年，由于一次最强的厄尔尼诺现象，使得全球温度达到历史上的最高峰，这是自精得全球温度达到历史上的最高峰，这是自精确的测温仪问世以来最热的一年确的测温仪问世以来最热的一年 全世界范围的山脉、冰河正在逐渐消退、减全世界范围的山脉、冰河正在逐渐消退、减少少北极的冰山在过去的四十年间已经丧失了其北极的冰

3、山在过去的四十年间已经丧失了其厚度的厚度的4040在中国，山岳冰川的退缩使三亿人面临着断水的威胁，这是因为亚洲大陆许多为人们提供水源的大江大河都发源于青藏高原 最近的一份调查显示，受全球变暖的影响，珠穆朗玛峰降低了1.3米（4英尺)全球气候变化的影响导致地球轻摇或灾难性后果生态系统的调整海平面上升洪涝、干旱等极端天气事件的多发疾病灾害的增加中国极端天气频发与全球变暖有关并可能加剧Now discuss with your classmates about the weather and the environmentAre you ready to write your idea about

4、it？Then write it now！After you know about the After you know about the weather,letweather,lets s come back the come back the test,unittest,unit 6 It 6 Its rainings raining How is the weather today?(今天天气怎么样？）windyHow is the weather today?cloudcloudy yHow is the weather today?sunsunnynyHow is the weat

5、her today?rainyHow is the weather today?snowysunnycloudywindy rainy/rainingsnowy /snowing-HowHows the weather today?s the weather today?(今天天气怎么样？今天天气怎么样？)-It-Its s(天气是天气是的）的）Beijing ShanghaiMoscowTorontoBoston1aMatch the words with the pictures.1.raining_2.windy_3.cloudy_4.sunny_5.snowing_TorontoTor

6、ontoBeijingBostonMoscowShanghaiHows the weather in Shanghai?Its cloudyabc ce eb bcaedcb4 42 232bListen again.Match the names with the activities.1._ Uncle Joe a.is playing computer games.2._ Jeff b.is cooking.3._ Mary c.is playing basketball4._ Aunt Sarah d.is watching TVcadbPair work :talk about th

7、e weather.A:How is the weather in?(Whats the weather like in?)B:Its sunny/rainy/Windy/cloudy.What do they mean?sunny cloudy windyrainysnowyHe is getting up.What is he doing?getgettingWhat is he doing?He is running.runrunningWhat is he doing?He is playing basketball.playplayingWhat is he doing?He is.

8、doing homeworkreadingplaying footballdodoingreadreadingWhat is she doing?She is.cleaningdrawingrunning cleancleaningdrawdrawingrunrunningWhat is she doing?She is dancing.dancedancingHow is the weatherHow is the weather？A:Whats Uncle Joe doing?B:Hes playing basketball.Li Hongis cooking.Maryis watchin

9、g TV.Tomis playing computer games.Let us playGuessing gameWhat are they doing?They,re dancing.What,s he doing?He is eating dinner.What,s he doing?He,s running.增加习题练习 根据汉语意思完成下列句子根据汉语意思完成下列句子1.今天天气怎么样今天天气怎么样?热而潮湿热而潮湿.the today?Its _ and _.2.你喜欢寒冷的天气吗你喜欢寒冷的天气吗?不不,我不喜欢我不喜欢._you like _ _?No,I _.3.她现在在干什

10、么她现在在干什么?她正在看电视她正在看电视.What _ she _?She is _ _.4.他们在干什么他们在干什么?他们在拍照他们在拍照_ _ they_?They _ _ _.5.Lily通常穿着一件蓝色的衣服通常穿着一件蓝色的衣服.Lily always _ a _ _ .HowsweatherhothumidDocoldweatherdontisdoingwatching TVWhataredoingaretakingphotoswearsblue uniform用所给词的用所给词的适当形式填空：适当形式填空：1.I _(be)singing.2.I am _(cook)now.3

11、.We _(be)listening.4.They are _(read).5.He _(be)painting.6.She is _(see)a movie.7.He _(play)soccer now.8.I _(eat)lunch now.9.We _(watch)TV now.10.Tom _(write)a letter now.11.-Where is your father?-He _(water)flowers.amcookingarereadingisseeingis playingam eatingare watchingis writingis watering现在进行时态现在进行时态Homework1.记第五单元的单词记第五单元的单词。2.完成练习册完成练习册3232、3333页页。3.预习预习2727页页 3a3a部分，明天上这一课部分，明天上这一课。Thank you Bye bye