初中英语人教新目标 (Go for it) 版九年级全册Unit 6 When was it invented?综合与测试导学案及答案

这是一份初中英语人教新目标 (Go for it) 版九年级全册Unit 6 When was it invented?综合与测试导学案及答案，文件包含人教版英语九年级全册人教版英语九年级全册推荐Unit6Whenwasitinvented学案1doc、人教版英语九年级全册人教版英语九年级全册推荐Unit6Whenwasitinvented学案2doc、人教版英语九年级全册人教版英语九年级全册推荐Unit6Whenwasitinvented学案3doc、人教版英语九年级全册人教版英语九年级全册推荐Unit6Whenwasitinvented学案4doc等4份学案配套教学资源，其中学案共79页， 欢迎下载使用。

Unit 6　When was it invented?
Section A(1a－2d)


1．重点单词：heel，scoop，electricity，style，project，pleasure，zipper，daily，website，pioneer，list，mention
2．重点短语：be used for，think of，have a point
3．重点句式：—When was the telephone invented?
—I think it was invented in 1876.
What are they used for?
Can you help me think of an invention?
Is it really such a great invention?
Think about how often it's used in our daily lives.
The pioneers of different inventions were listed there.
At that time，it wasn't used widely.

1．重点短语和句型
2．一般过去时态的被动语态

一般过去时态的被动语态

一、预习课本P41－42新单词并背诵，完成下面的汉译英。
1．鞋跟________　　　　2.铲子________
3．电能________ 4.样式________
5．项目________ 6.高兴________
7．拉链________ 8.日常的________
9．网站________ 10.先锋________
11．名单________ 12.提到________
二、认真预习1a－2d找出下列短语和句型。
1．被用来……________________________________________________________________________
2．考虑________________________________________________________________________
3．有道理________________________________________________________________________
4．—电话是什么时候发明的？
—我认为它是1876年发明的。
________________________________________________________________________
________________________________________________________________________
5．它们是用来干什么的呢？________________________________________________________________________
6．你能帮我考虑一种发明吗？
________________________________________________________________________
7．它真的是如此伟大的一项发明吗？
________________________________________________________________________
8．考虑一下它在我们的日常生活中使用的多么频繁。
________________________________________________________________________
9．不同发明的先锋都被列了出来。
________________________________________________________________________
10．在那时，它还没有被广泛地应用。[来源:学§科§网Z§X§X§K]
________________________________________________________________________

Step 1　情景导入
Teacher：We have inventions everywhere. Inventions make us live easily and happily. Without inventions，our lives will be much more difficult. Today，we will know about a few inventions and talk about the history of them.(Show the pictures of four inventions on the screen：a car，a TV set，a telephone，and a computer.)
When was the telephone invented？It was invented in 1876. Please pay attention to“was”．Now please practice the conversations like this according to the information on the screen.
环节说明：根据教师提供的发明及其被发明的时间为素材，采用对话练习的方式引入新课。通过问答操练，加深学生对对话内容的理解，使学生很快的投入到学习中去。
Step 2　完成教材1a－1c的任务
1．1a中的四种发明，你认为哪个是最早发明的，依次标出序号，小组内可交流。(3分钟)
2．认真听录音，将1b中的物品和它们发明的年代匹配。(4分钟)
3．再听一遍录音，并跟读对话。(4分钟)
4．两人一组互相利用1b中的物品和发明年代，仿照1c的对话形式编练新的对话，完成后邀请几组学生展示。(5分钟)。
参考案例
A：When was the telephone invented?
B：I think it was invented in 1876.
5．小结训练。(3分钟)
(B)1.—The book ________ to you by Jim，so you can ask him.
—Thank you. I will ask him.
A．gave　　　　　　　　B．was given
C．was giving D．had given
(D)2.—________invented the telephone?
—Sorry，I don't know. Let's ask the teacher.
A．What　　B．When　　C．Where　　D．Who
(D)3.These kinds of shoes ________ well.
A．were not sold B．won't be sold
C．are not sold D．don't sell
(B)4.—When ________ the telephone ________？
—In 1876.
A．did；invent B．was；invented
C．were；invented D．do；invented
环节说明：听说结合，第一时间向学生传达语言目标，通过结对对话练习和小结训练，使语言目标得以强化。
Step 3　完成教材2a－2c的任务
1.认真观察2a中的图片，然后听录音，根据听到的顺序为图片标号，集体核对答案。(3分钟)
2．再认真听一遍录音，完成2b中的表格，完成后集体核对答案。(3分钟)
3．听第三遍录音，学生跟读。(3分钟)
4．两人一组利用2b中的信息，仿照2c的形式两人一组编练新的对话，邀请几组学生表演对话。(5分钟)
5．小结训练。(3分钟)
(C)1.The knife ________ things.
A．used for cutting B．is used for cut
C．is used to cut D．use to cut
(C)2.The thing ________ by Jim under the bed is a teapot.
A．invented B．discovered
C．found D．found out
(A)3.The teachers ________ how to use computer in our class yesterday.
A．were taught B．taught
C．was taught D．teach
环节说明：通过听、说、读、写学习训练让学生掌握了一般过去时态的被动语态；同时学生的口语表达能力在这一环节得到提升。
Step 4　完成教材2d的任务
1．学生自读对话，完成下面的问题。(5分钟)
1)判断正误 T或F；2)根据对话内容填空；3)回答问题。
1)Is the subject for Paul's school project “inventions that changed the world.”？(F)
2)Roy advise Paul to talk about the_zipper．
3)When was the zipper invented？And who invented it?
The_zipper_was_invented_by_Whitcomb_Judson_in_1893.
2．大声朗读2d中的对话，读熟后与同伴结对练习，分角色表演对话。(3分钟)
3．邀请三组学生来表演对话。(3分钟)
4．小结训练。(3分钟)
连词成句
1．it，invention，is，great，really，a，such
Is_it_really_such_a_great_invention?
2．did，popular，when，become，it
When_did_it_become_popular?
3．think，lives，about，daily，how，our，often，in，it，used，is
Think_about_how_often_it's_used_in_our_daily_lives．
4．can，invention，you，an，help，of，think，me
Can_you_help_me_think_of_an_invention?
环节说明：将对话问题化，既能锻炼学生的思维能力又能加深对课文的理解。小结训练又对对话中的重要句型进行了巩固加深。
Step 5　问题探究
1．一般过去时态的被动语态
我们的教学楼是去年建成的。(汉译英)
Our_class_building_was_built_last_year.
①一般过去时的被动语态的结构为： 主语(动作接受者)＋was/were＋动词的过去分词＋(by＋动作执行者)；
②否定句：主语＋wasn't/weren't＋动词的过去分词＋(by＋动作执行者)；
③一般疑问句：Was/Were＋主语＋动词的过去分词＋(by＋动作执行者)?
④特殊疑问句：特殊疑问词＋be＋主语＋动词的过去分词＋(by＋动作执行者)?
(　)2.Pens are used ________ writing.
A．in　　　　B．to　　　　C．for　　　　D．at
答案选择C，be used for doing sth.＝ be used to do sth.被用来做某事(是被动语态)。

请学生们做前面课时训练部分。
Section A(3a－3c)


1．重点单词：nearly，ruler，boil，remain，smell，saint，national，trade，doubt
2．重点短语：by accident，fall into，some time，take place，without doubt，It is believed that...
3．重点句式：
In England，tea didn't appear until around 1660.
When was tea brought to other countries?

1．重点短语和句型
2．一般过去时态的被动语态

一般过去时态的被动语态

一、预习课本P43新单词并背诵，完成下面的汉译英。
1．几乎________　　　　2.统治者________
3．煮沸________ 4.剩余________
5．气味________ 6.圣人________
7．国家的________ 8.疑惑________
9．交易________
二、认真预习3a－3c找出下列短语和句型。
1．偶然________________________________________________________________________
2．发生________________________________________________________________________
3．毫无疑问________________________________________________________________________
4．掉入到……里________________________________________________________________________
5．一段时间________________________________________________________________________
6．据说________________________________________________________________________
7．在英国，茶叶大约直到1660年才出现。
________________________________________________________________________
8．茶叶是什么时候传到其他国家的？
________________________________________________________________________

Step 1　情景导入
Teacher：Tea is one of the most popular drinks in the world. Do you know where it was invented and how it was invented？Do you want to know more about tea？OK，let's learn the passage in 3a together to find out the answers.
环节说明：通过问题引出本节课要学习的内容，过渡自然，引起学生的兴趣。
Step 2　完成教材3a－3c的任务
1．快速阅读3a短文，将段落和段落大意匹配，完成后让学生展示答案，教师点拨。(5分钟)
2．认真阅读短文，回答3b中的五个问题，完成后教师点拨。(3分钟)
3．细心阅读短文，理解每一句话的意思，小组合作解决遇到的疑难问题。(3分钟)
4．教师点拨短文中出现的重点和难点。(3分钟)
5．根据短文内容，用3c方框中的单词的正确形式完成句子，完成后请学生展示答案，教师点拨。(3分钟)
6．熟读短文，识记并背诵知识要点。(5分钟)
7．小结训练。(3分钟)
(A)1.I found my lost pen under my bed ________.
A．by accident　　　　　B．by the end
C．by mistake D．by car
(B)2.The students didn't stop talking ________ the teacher came into the classroom.
A．while　　B．until　　C．as　　　D．at
(B)3.Only a few tigers ________ in China.
A．have B．remain C．keep D．stay
(C)4.Great changes ________ in the city in the last few years.
A．have been take place B．happened
C．have taken place D．have happened
(A)5.It is ________ that our English teacher will visit America during the summer vacation.
A．said B．saying C．say D．says
环节说明：通读阅读分析文章，学生的阅读分析能力在这一环节得到提升；小结训练又及时地巩固强化了重要的知识点。
Step 3　问题探究
(　)1.I met her ________ at the bus stop.
A．by mistake B．by accident
C．without doubt D．take place
答案选择B，句意：“我在公共汽车站意外地见到了她”，by accident意为“意外，偶然”。
(　)2.I didn't go to bed ________ I finished my work.
A．until 　B．after C．when D．while
答案选择A，句意：“我直到把作业做完才上床睡觉。”not...until...意为 “直到……才……”。所以答案为A。
(　)3.It is ________ that our team will win the match.
A．believing B．believed
C．believes D．to believe
答案选择A，It is believed that意为“据说”，是固定结构。因此答案选择A。

请学生们做前面课时训练部分。
Section A(Grammar Focus－4c)


1．重点单词：fridge，low，somebody，translate，lock，earthquake，sudden，bell，biscuit，cookie，musical，instrument
2．重点短语：at a low price，all of a sudden
3．重点句式：
Who was it invented by?
Somebody stole my camera from my hotel room.
Our parents advised us not to go out alone.
Different writers translated the book into different languages.

1．重点短语和句型
2．一般过去时态的被动语态

熟练掌握一般过去时态的被动语态

一、预习课本P44新单词并背诵，完成下面的汉译英。
1．冰箱________　　　　2.低的________
3．某人________ 4.翻译________
5．锁住________ 6.地震________
7．突然(的)________ 8.饼干________
9．曲奇________ 10.器械________
11．铃声________ 12.音乐的________
二、认真预习3a－3c找出下列短语和句型。
1．以低廉的价格________________________________________________________________________
2．突然________________________________________________________________________
3．它是被谁发明的？________________________________________________________________________
4．有人从我旅馆房间里偷走了我的相机。
________________________________________________________________________
5．我们的父母建议我们不要单独外出。
________________________________________________________________________
6．不同的作家把这本书翻译成了不同的语言。
________________________________________________________________________

Step 1　情景导入
Teacher：When was the telephone invented?
Student 1：It was invented in 1876.
Now please practice conversations with your partners like this according to the information that the teacher gives.
环节说明：通过生生互动，复习了学过的内容——被动语态，同时还锻炼了学生的口语表达能力。[来源:学科网ZXXK]
Step 2　完成教材Grammar Focus的任务
1．学生大声朗读Grammar Focus的句子。(2分钟)
2．小结训练。(3分钟)
When_was_the_zipper_invented?
(拉链是什么时候被发明的？)
It_was_invented_in_1893.
(它是在1893年被发明的。)
Who_was_it_invented_by?
(它是被谁发明的？)
It_was_invented_by_Whitcomb_Judson.
(它是被Whitcomb Judson发明的。)
When_was_tea_brought_to_Korea?
(茶叶是什么时候被带到朝鲜的？)
It_was_brought_to_Korea_during_the_6th_and_7th_centuries.
(它是在6世纪到7世纪期间被带到朝鲜的。)
What is the hot ice­cream scoop used_for?
(热冰激凌铲是被用来做什么的？)
It's_used_for_serving_really_cold_ice­cream.
(它是用来端很冷的冰激凌的。)
环节说明：通过对Grammar Focus 句型的填空练习能够使学生更好地来理解掌握本单元的重点句型。
Step 3　完成教材4a－4c的任务
1.认真阅读4a中的例句，然后根据例句形式把所给的主动语态的句子改写成被动语态的句子，完成后小组成员互相交流答案。(3分钟)
2．认真阅读4b中的句子，然后用括号内所给单词的正确形式填空，请几组学生在黑板上板演答案，完成后小组内互相交流所写句子，师生共同点拨黑板上的答案。(5分钟)
3．认真阅读4c中的短文，用括号中的单词的正确形式填空，完成后小组内交流答案，教师点拨易错点。(3分钟)
4．小结训练。(2分钟)
(C)1.Every year lots of trees ________ to make our hometown greener and more beautiful.
A．is planted　　　　　　　B．was planted
C．are planted D．were planted
(D)2.I had a sore back，and the doctor advised me ________ and rest.
A．lie down B．lying down
C．lay down D．to lie down
(C)3.Can you translate the book in English ________ French?
A．to　　　　B．for　　　C．into　　　D．with
环节说明：通过本环节的学习，让学生复习掌握了一般现在时态和一般过去时态的被动语态。
Step 4　问题探究
(　)1.________ he heard a cry above him.
A．By accident B．Take place
C．All of a sudden D．Without doubt
答案选择C，根据句意“突然他听到上方传来一声惊叫”，all of a sudden意为“突然”，所以答案选择C。
(　)2.The Chinese writer has got lots of fans in France. His new book ________ into French as soon as it came out.
A．was translated B．translated
C．is translated D．translates
答案选择A, 根据题干his new book 和 translate 的关系，应该选择被动语态；又根据时间状语从句as soon as it came out 是一般过去时态，可知“被翻译”也是一般过去时态。故选A。

请学生们做前面课时训练部分。
Section B(1a－1e)


1．重点单词：crispy，salty，sour，customer
2．重点短语：by mistake，in the end
3．重点句式：
Potato chips were invented by mistake.
George wanted to make the customer happy.

1．重点单词和句型
2．能够熟练运用被动语态

能够熟练运用被动语态

一、预习课本P45新单词并背诵，完成下面的汉译英。
1．脆的________　　　　2.咸的________
3．酸的________ 4.顾客________
二、认真预习1a－1e找出下列短语和句型。
1．错误地________________________________________________________________________
2．最后________________________________________________________________________
3．炸薯条被错误地发明了。________________________________________________________________________
4．乔治想让顾客高兴。________________________________________________________________________

Step 1　情景导入
Teacher：Do you like eating potato chips？I am sure most of us like them very much.[来源:学#科#网Z#X#X#K]
But do you know who invented them and how they were invented？Today let's learn together to know more about the history of the potato chips.
环节说明：以学生们喜爱的薯条的发明为导入，引起学生的学习兴趣，为听力做好铺垫。
Step 2　完成教材1a－1e的任务
1．学生朗读1a中的单词，教师纠正读音错误，然后两人一组互相提问背诵单词。(3分钟)
2．你知道1a图片中的水果是什么味道吗？用方框中的形容词描述水果的味道，完成后小组内互相交流。(3分钟)
3．在1b四个表示味道的单词后面填写具有这种味道的食物，完成后小组内互相交流。(3分钟)
4．听录音，根据对话内容判断句子的正误，集体核对答案，完成1c。(3分钟)[来源:学_科_网]
5．再听一遍录音，完成1d的填空，完成后学生展示答案，教师点拨。(3分钟)
6．听第三遍录音，学生跟着大声朗读。(2分钟)
7．两人一组利用1c和1d中的听力信息，仿照1e形式编练对话，并在小组内互相表演对话。(4分钟)
8．小结训练。(2分钟)
(B)1.John took my clothes ________ mistake.
A．to　　　B．by　　　C．about　　D．on
(C)2.Though my grandmother is old，she is funny enough to make ________.
A．us to laugh B．our laugh
C．us laugh D．ours laugh
(C)3.This fish is cooked by a cook ________ Jack.
A．call B．calls C．called D．calling
(C)4.He puts too much salt into the dish，so it is very ______.
A．sweet B．crispy C．salty D．sour
环节说明：通过听说训练，让学生熟练地掌握了语言目标；通过小结训练，让学生熟练地掌握了重要的知识点。
Step 3　问题探究
(　)1.—Clark，your room is really in a mess. It needs ________.
—Sorry，mum. I'll do it at once.
A．clean B．cleaned
C．to clean D．to be cleaned
答案选择D，need加了s，则说明它不是情态动词，故排除A，选项B也不符合语法，短语need to be done＝need doing表示“需要被……”，所以选择D。
(　)2.My classmate is very careless，and he always takes my school things ________.
A．by accident B．by mistake
C．in the end D．without doubt
答案选择B，根据句意“他总是错拿我的文具”，by mistake意为“错误地”。

请学生们做前面课时训练部分。
Section B(2a－2e)


1．重点单词：Canadian，divide，basket，popularity，professional，hero
2．重点短语：in history，dream of，look up to，divide...into，not only...but also...
3．重点句式：
He was asked to think of a game that could be played in the winter.
Dr. Naismith created a game to be played inside on a hard floor.
They need to stop the competing team from getting the ball into their own basket.
The popularity of basketball has risen around the world，with many young people dreaming of becoming famous players.
Basketball has not only become a popular sport to play，but it has also become a popular sport to watch.
The number of foreign players，including Chinese players，in the NBA has increased.
These stars encourage young people to work hard to achieve their dreams.

1．重点短语和句型
2．通过脑中构图的方法来加强理解和记忆

1．重点短语和句型
2．通过脑中构图的方法来加强理解和记忆

一、预习课本P46－47新单词并背诵，完成下面的汉译英。
1．加拿大的________　　　2.分开________
3．筐________ 4.受欢迎________
5．英雄________ 6.职业的________
二、认真预习2a－2e内容找出下列短语和句型。
1．历史上________________________________________________________________________
2．梦想________________________________________________________________________
3．把……分开________________________________________________________________________
4．不但……而且……________________________________________________________________________
5．仰慕________________________________________________________________________
6．他被要求考虑一种能够在冬天玩的运动。
________________________________________________________________________
7．Naismith博士发明了一种可以在室内坚硬地板上玩的运动。
________________________________________________________________________
8．他们需要阻止竞争队伍把球投入到他们自己的篮筐中。
________________________________________________________________________
9．足球不仅成为玩的运动也变成了可以观赏的运动。
________________________________________________________________________
10．NBA中外籍运动员的数量包括中国运动员的数量已经增加了。
________________________________________________________________________
11．这些明星激励年轻人努力学习实现他们的梦想。
________________________________________________________________________

Step 1　情景导入
(Show a basketball to students)
Teacher：Do you like playing basketball？Do you like Yao Ming？Who is your favorite basketball star in NBA?
Do you know who invented basketball？When was basketball invented？Many of us don't know. Today we will learn them.
环节说明：运用学生比较感兴趣的话题进行导入，能够引起学生的共鸣，拉近学生和教师的距离，为创造一个热情的、活跃的、和谐的课堂气氛打下基础。
Step 2　完成教材2a－2c的任务
1．你喜欢篮球吗？你喜欢看篮球比赛吗？对这项运动你知道多少呢？小组内互相交流对这项运动的了解。(3分钟)
2．快速阅读短文，说出每个段落的大意。完成后请学生说出自己的观点，教师点拨。(3分钟)
3．认真阅读短文，根据短文内容完成2c的简图，然后再添加跟此有关的内容，完成后集体核对答案。(5分钟)
4．再次细心阅读短文，理解每一句话的意思，小组合作解决遇到的疑难问题。(5分钟)
5．教师点拨短文中出现的重点和难点。(3分钟)
6．熟读短文，识记并背诵知识要点。(3分钟)
7．小结训练。(4分钟)
(D)1.—What do you think of this new movie?
—Sorry，I haven't seen it. But ________ is believed that the actors are all very famous.
A．that　　　B．this　　　C．which　　D．it
(A)2.The number of students in my class ________ 60 and a number of them ________boys.
A．is；are B．are；is C．are；are D．is；is
(C)3.Basketball ________ in 1861 by James Naismith.
A．invented B．is invented
C．was invented D．is inventing
(C)4.Not only my parents but also my grandmother ________ me ________.
A．encourage；to hold on to my dream
B．encourage；hold on to my dream
C．encourages；to hold on to my dream
D．encourages；hold on to my dream
(C)5.We all ________ these national heroes，and we all take pride in them.
A．look up B．look foward to
C．look up to D．look after
(D)6.I dream of ________ to the moon one day.
A．fly B．to fly C．flies D．flying
环节说明：通过本环节的学习不仅锻炼了学生的阅读能力，而且通过小结训练让学生对重要知识点进行了巩固练习。
Step 3　完成教材 2d－2e的任务
1.根据2c中的简图信息和2d中的问题提示，两人一组互相说出篮球运动的发展史，然后邀请学生回答。(5分钟)
2．你认为成为一名著名的篮球运动员会怎么样呢？列出成为著名篮球运动员的好处和坏处。(10分钟)
环节说明：通过2d 环节让学生对文章有了更深刻的理解；2e环节提升了学生的总结概括能力和语言组织能力。
Step 4　问题探究
(　)1.Let's divide ourselves ________ 4 groups.
A．for B．to C．into D．for
答案选择C，divide…into意为“将……划分成……”。
(　)2.It ________ last week that the haze(雾霾) in Beijing caused many problems.
A．reports B．reported
C．is reported D．was reported
答案选择D，It is/was reported that...意为“据报道……”，根据last week知道为过去的事情，所以选择答案 D。
(　)3.Jessica's parents always encourage her ________ out her opinions.
A．speak B．speaking
C．to speak D．will speak
答案选择C，encourage sb. to do sth.意为“鼓励某人做某事”，所以答案选C。
(　)4.________ Lisa ________ Lucy often goes to the movies with me because they like watching movies.
A．Not only；but also B．Neither；nor
C．Both；and D．Either；or
答案选择A，Not only...but also...意为“不但……而且……”；Neither...nor...意为“二者都不”， Both...and...意为“二者都”；Either...or...意为“二者其中之一”；根据句意：丽萨与露西经常跟我一起去看电影，因为她们喜欢看电影。排除B和D，又因为谓语动词是单三形式，所以答案选择A。

请学生们做前面课时训练部分。[来源:学科网]
Section B(3a－Self Check)


复习前面几个课时学过的重点单词、短语和句型。

一般过去时态的被动语态

灵活运用一般过去时态的被动语态
【自主学习方案】
复习学过的重点单词、短语和句型

Step 1　情景导入
Teacher：Do you have something that you do not like to do？If you do，why not think of an invention that could help you？Now please talk to your partners about your problems and the inventions.
环节说明：以3a的问题为导入问题，自然引出3a的学习，简单明了，同时小组内的互相交流更是练习了学生的口语表达能力，而且还降低了学生完成3a的难度。
Step 2　完成教材3a－3b的任务
1．你有不喜欢的东西吗？你能想出一个发明来帮助你吗？和你的搭档交流，然后把3a表格填写完整。(3分钟)
2．根据3a中填写的内容及3b中的提示写一篇短文，向大家描述你的新发明。(5分钟)
3．完成写作后小组内互相交流纠错，借鉴好词好句，教师批阅点拨。(10分钟)
参考案例
we often get hurt by the hot water in the cup. So we invented a special cup. This special cup was invented by Ma Peng. It is made of metal and there is a special machine in it. If you want to drink water，you can turn on the button，the machine will work，and the cup can
tell you the temperature of the water so that you will not get hurt when you drink water. If you don't drink water，you can turn off the button again. This kind of cup have different shapes and colors，you can choose freely.
环节说明：通过这个教学环节，锻炼了学生的总结能力和口语表达能力。
Step 3　完成教材Self Check的任务
1.两人一组互相提问Self Check 1的单词，然后用这些单词的正确形式完成填空。
2．把Self Check 2中的主动语态的句子改写成被动语态的句子，完成后小组内互相交流所写答案。(3分钟)
3．找出你更想了解的一项发明，根据提示在横线上填写相关内容。(3分钟)
环节说明：通过这个环节的学习让学生熟练掌握了一般过去时态的被动语态。
Step 4　问题探究
(　)1.The mobile phone has influenced people's life a lot since it ________.
A．invents　　　　　B．invented
C．is invented D．was invented
答案选择D，句意：自从手机发明后，它在很大程度上影响了人们的生活。since后面跟一般过去时，手机与动词invent在逻辑上是被动关系，所以用一般过去时的被动语态。