1、练习材料：Lesson21 Mad or not?（49s）
Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built years ago, but for some reason it could not be used then. Last year, however, it came into use. Over a hundred people must have been driven away from their homes by the noise. I am one of the few people left. Sometimes I think this house will be knocked down by a passing plane. I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.
音标翻译：
Aeroplanes ɑr ˈsloʊli ˈdraɪvɪŋ mi mæd. aɪ lɪv nɪr ən ˈɛrˌpɔrt ænd ˈpæsɪŋ pleɪnz kæn bi hɜrd naɪt ænd deɪ. ði ˈɛrˌpɔrt wʌz bɪlt jɪrz əˈgoʊ, bʌt fɔr sʌm ˈrizən ɪt kʊd nɑt bi juzd ðɛn. læst jɪr, ˌhaʊˈɛvər, ɪt keɪm ˈɪntu juz. ˈoʊvər ə ˈhʌndrəd ˈpipəl mʌst hæv bɪn ˈdrɪvən əˈweɪ frʌm ðɛr hoʊmz baɪ ðə nɔɪz. aɪ æm wʌn ʌv ðə fju ˈpipəl lɛft. səmˈtaɪmz aɪ θɪŋk ðɪs haʊs wɪl bi nɑkt daʊn baɪ ə ˈpæsɪŋ pleɪn. aɪ hæv bɪn ˈɔfərd ə lɑrʤ sʌm ʌv ˈmʌni tu goʊ əˈweɪ, bʌt aɪ æm dɪˈtɜrmənd tu steɪ hir. ˈɛvriˌbɑdi sɛz aɪ mʌst bi mæd ænd ðeɪ ɑr ˈprɑbəbli raɪt.
2、任务配置：L0+L1
3、知识笔记：
生词和短语
drive someone mad, 把某人逼疯
came into use, 启用
Over a hundred people must have been driven away from their homes by the noise.
情态动词must+完成时态，是对过去事情的推测，猜测某一事情肯定已经发生。drive away， 赶走，逼走
练习/h/的发音：
/h/是字母h的发音。声门摩擦辅音。发音时气流送出口腔，在通过声门时发出轻微摩擦；口形随其后的元音而变化。/h/是清辅音，声带不振动。
音标相关单词练习：
heard /hɜrd/
however /haʊˈɛvər/
have /hæv/
homes /hoʊmz/
here /hir/
