九年级英语When_was_it_invented__课件

Unit4Whenwasitinvented 学习目标1 学会使用被动语态谈论某种物品发明的时间 发明人及其用途 2 掌握各种时态的被动语态及情态动词的被动语态结构 知识结构体系 重点单词 invent calculator scoop operate heat sour ancient remain notice produce pleasant pie throw taste century active knock divide常考短语 beusedfor lightbulb microwaveoven bymistake byaccident accordingto fallinto inthisway knockinto重点句型 1 Whenwas invented 2 Whoinventedthe 3 The wasinventedby 4 Itisbelievedthat 语法聚焦 被动语态及其谓语动词的结构形式和用法 课程标准要求掌握的内容 课时分配 Period1wordsandSectionA1a 1cPeriod2SectionA2a 4Period3SectionB1a 2cPeriod4SectionB3a 4bPeriod5Selfcheck Reading Groupwork 1a 1976 1885 1971 1876 1927 学生根据自己搜集的资料练习Ithink wasinventedbefore afterthe 句型 Listening 1b 1876 1885 1927 1971 1976 d a e c b 核对信息 学生认真 Pairwork 1c A Whenwasthetelephone invented B Ithinkitwasinventedin1876 Listening 2a 2b 3 1 2 注意听前准备 尤其是2B中的人名 GrammarFocus Thepassivevoice被动语态在被动语态的句子中 谓语部分的结构是be 过去分词 被动语态的句子的时态变化反映在be动词上 也就是说 把一个句子做成被动语态的句子 只需要写出be动词的所需时态 再加上所给动词 的过去分词就行了 当然 这只是指谓语部分而言 我们知道 be动词作为一个独立的谓语动词有自己现在分词 being 和过去分词 been 那么 下面我们来看看be在各种时态中的变化形式 Thepassivevoice 被动语态 主动语态变被动语态的结构图 Bellinventedthetelephonein1876 ThetelephonewasinventedbyBellin1876 主语 谓语动词过去时 宾语 时间状语 主语 谓语动词的过去分词 宾语 时间状语 1 世界上许多国家都讲英文 Makesentences English isspoken inmanycountriesallovertheworld 2 纸是中国发明的 Paper wasinventedinChina 3 这栋大楼是去年建造的 Thebuilding wasbuiltlastyear Pairwork 3a Helpfulinventions lightbulb TVset microwaveoven fan radio umbrella bicycle camera watch computer Annoyinginventions alarmclock mobilephone junkfood icecream 内容简单 组长带领组员完成 A Whatdoyouthinkisthemosthelpful mostannoyinginvention B Ithinkthemosthelpfulinvention mostannoyingisthe A Whyisthat B Pairwork 3b 教师与一名学生示范表演对话 然后让学生分组练习 SectionAPoints 1 被动语态的结构及其用法 2 invention inventor invent3 beusedforsth doingsth beusedas by 4 doyouthink做插入语5 mosthelpful annoying crispyandsalty Describehowfoodtastes 1a potatochips SectionB lemons sour icecream sweet tea sweet 师出示图片 学生用学过的单词描述食物的味道 Listening 2a 2b Thepotatochipswereinventedbymistake 2 Theywereinventedin1863 3 Thecustomerthoughtthepotatoesweren tthinenough 4 Thecustomersaidtheyweren tsaltyenough 5 Georgewantedtomakethecustomerhappy 6 Thecustomerwashappyintheend T F T T F F 听一听薯条是怎么被发明的 听录音 判断正误 错的要说明理由 thatpotatochipswereinventedbymistake Chips byachefcalledGeorgeCrum Theywereinventedin GeorgeCrumcookedthemforalongtimeuntilthey Andhesprinkledlotsofsaltonthemsotheywere 2bThehistoryofchips Didyouknow wereinvented 1853 werecrispy reallysalty 稍有难度 录音调控 听力技巧 Reading 3a Whoinventedtea 1 Whatisthisarticleabout 2 Whenwasitinvented 3 Whowasitinventedby 4 Howwasitinvented 小组合作解决问题 自学知识点 教师指导 学生展示 Writing 3b Frompieplatetoflyingdisk SelfCheck 2 TheabacuswasinventedinthesixthcenturybyChinese inthesixthcenturybytheChinese 注意 ReadingDoyouknowwhenbasketballwasinvented 3a parks schools exercise 100yearsold firstgameplayedin1891 playedindoors onwoodenfloor foreignplayersinNBA court basket aimtoscore baskets backboard 3b Whoinventedbasketball 2 WhyweretheBerlinOlympicsimportantforbasketball 3 Whatistheaimofbasketball 4 NameaprofessionalbasketballorganizationinAmerica JamesNaismith ItwasthefirsttimebasketballwasplayedasanOlympicevent Togettheballintothebasket TheNationalBasketballAssociation SectionBPionts 1 bymistake错误地2 intheend finally atlast3 on接触 above上方 over垂直4 byaccident偶然地5 accordingto根据6 notice的用法7 inthisway这样8 from to9 taste用