1.练习材料
Lesson71 A famous clock
When you visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over again the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great clock would never have been erected. Big Ben takes its name from Sir Benjamin Hall who was responsible for the making of the clock when the new Houses of Parliament were being built. It is not only of immense size, but is extremely accurate as well. Officials from Greenwich Observatory have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down !ˈ
2.任务配置:L0+L1
3.知识笔记
(1)查音标
/lɛsn/71 /ə/ /ˈfeɪməs/ /klɒk/
/wɛn/ /juː/ /ˈvɪzɪt/ /ˈlʌndən/, /wʌn/ /ɒv/ /ðə/ /fɜːst/ /θɪŋz/ /juː/ /wɪl/ /siː/ /ɪz/ /bɪg/ /bɛn/, /ðə/ /ˈfeɪməs/ /klɒk/ /wɪʧ/ /kæn/ /biː/ /hɜːd/ /ɔːl/ /ˈəʊvə/ /ðə/ /wɜːld/ /ɒn/ /ðə/ /biː/./biː/./siː/. /ɪf/ /ðə/ /ˈhaʊzɪz/ /ɒv/ /ˈpɑːləmənt/ /hæd/ /hɒt/ /biːn/ /bɜːnd/ /daʊn/ /ɪn/ 1834, /ðə/ /greɪt/ /klɒk/ /wʊd/ /ˈnɛvə/ /hæv/ /biːn/ /ɪˈrɛktɪd/. /bɪg/ /bɛn/ /teɪks/ /ɪts/ /neɪm/ /frɒm/ /sɜː/ /ˈbɛnʤəmɪn/ /hɔːl/ /huː/ /wɒz/ /rɪsˈpɒnsəbl/ /fɔː/ /ðə/ /ˈmeɪkɪŋ/ /ɒv/ /ðə/ /klɒk/ /wɛn/ /ðə/ /njuː/ /ˈhaʊzɪz/ /ɒv/ /ˈpɑːləmənt/ /wɜː/ /ˈbiːɪŋ/ /bɪlt/. /ɪt/ /ɪz/ /nɒt/ /ˈəʊnli/ /ɒv/ /ɪˈmɛns/ /saɪz/, /bʌt/ /ɪz/ /ɪksˈtriːmli/ /ˈækjʊrɪt/ /æz/ /wɛl/. /əˈfɪʃəlz/ /frɒm/ /ˈgrɪnɪʤ/ /əbˈzɜːvətri/ /hæv/ /ðə/ /klɒk/ /ʧɛkt/ /twaɪs/ /ə/ /deɪ/. /ɒn/ /ðə/ /biː/./biː/./siː/. /juː/ /kæn/ /hɪə/ /ðə/ /klɒk/ /wɛn/ /ɪt/ /ɪz/ /ˈækʧʊəli/ /ˈstraɪkɪŋ/ /bɪˈkɒz/ /ˈmaɪkrəfəʊnz/ /ɑː/ /kəˈnɛktɪd/ /tuː/ /ðə/ /klɒk/ /ˈtaʊə/. /bɪg/ /bɛn/ /hæz/ /ˈreəli/ /gɒn/ /rɒŋ/. /wʌns/, /haʊˈɛvə/, /ɪt/ /feɪld/ /tuː/ /gɪv/ /ðə/ /kəˈrɛkt/ /taɪm/. /ə/ /ˈpeɪntə/ /huː/ /hæd/ /biːn/ /ˈwɜːkɪŋ/ /ɒn/ /ðə/ /ˈtaʊə/ /hʌŋ/ /ə/ /pɒt/ /ɒv/ /peɪnt/ /ɒn/ /wʌn/ /ɒv/ /ðə/ /hændz/ /ænd/ /sləʊd/ /ɪt/ /daʊn/ !
(2) 学单词
1) parliament /ˈpɑːləmənt/ n. 议会，国会
2) erect /ɪˈrɛkt/ v. 建立
3) accurate /ˈækjʊrɪt/ adj. 准确的
4) official /əˈfɪʃəl/ n. 官员，行政人员
5) Greenwich /ˈgrɪnɪʤ/ n. 格林威治
6) observatory /əbˈzɜːvətri/ n. 天文台
7) check /ʧɛk/ v. 检查
8) microphone /ˈmaɪkrəfəʊn/ n. 麦克风，扩音器
9) tower /ˈtaʊə/ n. 塔
(3) 学音标/dr/
发音方法：
1）双唇稍稍突出，略成圆形
2）舌身保持发/r/的姿势，舌尖贴在齿龈后部，堵住气流。
3）舌头放开，让气流从舌尖和齿龈间冲出，冲破阻碍发出短促的/d/后立即发/r/。/dr/是个浊辅音，发音时声带震动。/dr/和/dʒ/的区别，发/dʒ/时嘴唇需收圆，同时舌头闭气的部位也比/dr/靠前。/ts/,/dz/,/dr/,/tr/是传统的音标符号，新课本中美式、英式读音都没将其包括在内。
4) 单词练习
/dr/音一定是接元音，所以不会出现在单词的末尾，一般只有字母组合dr发/dr/音,例词：
drop /drɒp/ vt. 滴
drive /draɪv/ vi. 开车
drum /drʌm/ vt. 击鼓
dreg /drɛg/ n. 渣滓
dree /driː/ adj. 凄凉的
drift /drɪft/ n. 漂流
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