九年级英语全册Unit6Whenwasitinvented第5课时SectionB3a_SelfCheck教案新版人教新目标版

When was it invented 教学目标 1. 语言知识目标： 1) 复习一般过去时态被动语态的用法。  2) 能够用英语讲述自己所熟悉的某一发明的简单过程。 3)能用英语介绍某一发明的简要过程。 2. 情感态度价值观目标： 了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的眼界，养成勤于思考，善于发现的好习惯，培养学生的创造精神。   重点 1）用英语介绍某一发明的简要过程。  2）掌握本单元所学的词汇、句型及语法知识，并能进行综合练习运用。 3）完成Self Check部分的练习试。 难点 用英语介绍某一发明的简要过程。   教学用具 多媒体课件、录音机 教学环节 说 明 二次备课 复习 Step1. Revision 1. Review the expressions and sentences in Section B 1.  2. Check the homework.   Let Ss introduce the history of basketball.   新课导入  Step2. Lead-in 1. Ask Ss which invention they like best.   Ss think about their favorite inventions.  2. Let some Ss talk about their favorite inventions.   课 程 讲 授 Step3. Thinking   1. Ask Ss what things they don’t like to do.   e.g.  Problem:  quickly taking notes in class.       2. Discuss in group and think of an invention that could help you.     e.g.  New invention:  a special pen           What is it used for： taking notes quickly in class            3. Ss discussing the problems and try to make their own notes.   4. Let some Ss read their notes to the class.  Step4. Writing   Work on 3b:  1. Tell Ss to write a description of your new invention.   2. The following sentence structure may help you.  常用句型：  ①  I think … is a very useful invention.    我认为……是一项很有用的发明。   ②  … was invented by…    ……是由……(某人)发明的    ③  … was invented in…    ……是在……（某时间）发明的   ④  It was used for…    它被用来……   ⑤ … is made of………   是由……(材料)制成的    Step5. Self Check   Work on Self Check 1:   1. Read the words in the box and make sure they know the meaning of each word.   2. Read the passage and try to fill in the blanks with the proper word.    3. Read the passage again. Check if the forms of the words are correct.   3. Let some Ss read their answers. Correct the mistakes.     Work on Self Check 2 1. Tell Ss to rewrite the sentences using the passive voice.    2. 指导： 复习一般过去时态的被动语态的结构。 复习将主动语态句子变为被动语态句子的过程。 3. Ss work by themselves and try to rewrite the sentences.  4. Check the answers with the class.   Work on Self Check 3 Find out information about an invention you would like to know more about and write sentences below.   Invention: __________ When: _____________ Who: _____________ Purpose: __________ Exercise:   If time is enough, do some more exercises on big screen.   小结 总结本单元要点。 作业布置 1. 试着向你的朋友用英语讲述篮球的发展过程。  2. 用下列词汇造句子。  look up to, by mistake, daily activities, It is said, all of a sudden, fall into, at the same time, Olympics 板 Unit 6 When was it invented? Section B (3a- Self Check) When New Invention---Purpose Who 课后反思