Unit3 A healthy life Grammar教案

Grammar
    Teaching material
    NSEFC Book 6 -- Unit 3
    Teaching aims
    Enable the students to master the usage of it.
    Teaching important & difficult points
    How to enable the students to know the usage of it.
    Teaching aids
    tape recorder, slides
    Teaching procedures
    Step1 Revision
    Complete the passage with the suitable words in their proper forms.
    1. due to                       6. stress
    2. addicted                     7.quit
    3. alcohol                      8.drugs
    4. manage                      9.pregnant
    5. cigarettes                10. adolescents
    Smoking __________, drinking _______ or taking other__________ produce many harmful effects and have no real benefits. So why do ___________do it? Some begin because they believe it makes them look cool. Others think it will help with _______. In their life possibly________ pressure from their parents or teachers.
    Some just want to see what it is like. What they don't realize is that they will get into the habit and __________ become ____________. It will then be difficult to _________ the habit. A few people ________to quit easily but for many it is a very painful process. Of course, the best way to deal with these drugs is not to start in the first place.
    Keys:cigarettes;alcohol;drugs;adolescents;stress; due to;eventually;addicted ;  quit;manage  
    Step2 Lead in
    Slide show 
    Discovering "It"
    1.It rains heavily .  指天气
    2. It is 20 kilometers from Granddad's house to James'. 指距离
    3. It is November 11, 2005.   指日期
    4. It is 9 o'clock at night.    指时间
    5. It is bad to smoke.        形式主语
    6. It is no good smoking.     形式主语
    7. It is likely that he will succeed.  形式主语
    Step3 The use of "it"
    一、"it"作人称代词
    1. it的最基本用法是作代词,主要指刚提到的事物,以避免重复:
    Xi'an is a beautiful city, isn't it?
    They watched the train until it disappeared in the distance.
    2. 也可以指动物或婴儿(未知性别的婴儿或孩子):

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