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北师大版英语九年级Unit 8 Discoveries Lesson 22 Famous Discoveries 第二课时课件

  • 课件名称:北师大版英语九年级Unit 8 Discoveries Lesson 22 Famous Discoveries 第二课时课件
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  • 更新时间:2018-5-22 7:04:43
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    北师大版英语九年级Unit 8 Discoveries Lesson 22 Famous Discoveries 第二课时课件
    Conditionals
    Famous Discoveries
    顺义区仁和中学
    李晓芳

    在第二课时学习结束时,学生能够:
    1、发现、归纳if 条件状语从句的语意功能 。
    2、通过习题的操练 ,正确运用主句和从句的时态。
    3、通过对灾难的应急措施的表达 ,正确恰当的使用if条件状语从句。
    4、培养学生在遇到突发紧急事件时,自救和帮助他人的意识。


    Think about it
    If we learn more about DNA, we will be able to treat more diseases.
    Is this a real situation? Can we learn more about DNA?

    If we learn more about DNA, we will be able to treat more diseases.
    Read the passage and underline the sentences like this.
    If we do not use them correctly, they can cause serious health problems.
    If we discover more about the human body, we can help people live longer and better lives.

    Which part of the sentence, which clause, expresses the condition?
    Which expresses the result if the condition happens?



    If we learn more about DNA, we will be able to treat more diseases.
    Read the passage and underline the sentences like this.
    If we do not use them correctly, they can cause serious health problems.
    If we discover more about the human body, we can help people live longer and better lives.

    What’s the verb in the if-clause?
    What’s the verb in the result clause?
    We can also use a model verb, such as can , in the result clause.
    If we discover more about the human body, we can help people live longer and better lives.
    Complete the sentences with the correct form of the verbs
    If you go to bed late, you will feel tired the next day.
    You can join the Chess Club if you are interested in it.
    We will stay at home if it rains tomorrow.
    If I finish the work early, I will play basketball with you.

    If I have a ten-day holiday,___________.
    Share your ideas.

    Share your ideas.
    If a famous scientist calls me, ____________
    Groupwork
    Work in group of four and have a discussion. Choose one of the three topics which your group members are interested in and list what you shall do or not do if an earthquake/fire/flood happens so that we will be able to survive.
    What can/will you do if there is __ ?

    Show time~

    Save people around us
    Arrange to help others
    Videos are just the beginning
    Encourage more people to take actions

    Homework
    1. Choose one of the topic and write a short passage about what you will do if __________.
    2. 完成Workbook Lesson 22 的练习。



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