练习材料：
Lesson 43 Over the South Pole
原文：
In 1929, three years after his flight over the North Pole, the American explorer, R. E. Byrd, successfully flew over the South Pole for the first time. Though, at first, Byrd and his men were able to take a great many photographs of the mountains that lay below, they soon ran into serious trouble. At one point, it seemed certain that their plane would crash. It could only get over the mountains if it rose to 10,000 feet. Byrd at once ordered his men to throw out two heavy food sacks. The plane was then able to rise and it cleared the mountains by 400 feet. Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight. The aircraft was able to fly over the endless white plains without difficulty.
音标：
ɪn 1929, θri jɪrz ˈæftər hɪz flaɪt ˈoʊvər ðə nɔrθ poʊl, ði əˈmɛrɪkən ɪkˈsplɔrər, ɑr. i. bɜrd, səkˈsɛsfəli flu ˈoʊvər ðə saʊθ poʊl fɔr ðə fɜrst taɪm. ðoʊ, æt fɜrst, bɜrd ænd hɪz mɛn wɜr ˈeɪbəl tu teɪk ə greɪt ˈmɛni ˈfoʊtəˌgræfs ʌv ðə ˈmaʊntənz ðæt leɪ bɪˈloʊ, ðeɪ sun ræn ˈɪntu ˈsɪriəs ˈtrʌbəl. æt wʌn pɔɪnt, ɪt simd ˈsɜrtən ðæt ðɛr pleɪn wʊd kræʃ. ɪt kʊd ˈoʊnli gɛt ˈoʊvər ðə ˈmaʊntənz ɪf ɪt roʊz tu 10,000 fit. bɜrd æt wʌns ˈɔrdərd hɪz mɛn tu θroʊ aʊt tu ˈhɛvi fud sæks. ðə pleɪn wɑz ðɛn ˈeɪbəl tu raɪz ænd ɪt klɪrd ðə ˈmaʊntənz baɪ 400 fit. bɜrd naʊ nu ðæt hi wʊd bi ˈeɪbəl tu riʧ ðə saʊθ poʊl wɪʧ wɑz 300 maɪlz əˈweɪ, fɔr ðɛr wɜr noʊ mɔr ˈmaʊntənz ɪn saɪt. ði ˈɛrˌkræft wʌz ˈeɪbəl tu flaɪ ˈoʊvər ði ˈɛndləs waɪt pleɪnz wɪˈθaʊt ˈdɪfəkəlti.
任务配置：
L0+L1+L2+L3+L4
知识笔记：
中元音【ɜː】（美式英语对应的音标符号【ɝ】）
发音方法：
1）半张开嘴巴，双唇略扁平，向嘴角两边略拉开。
2）舌身平放，舌中部伸向硬颚，但不要接触到硬颚，舌部肌肉紧张。
3）震动声带，发出/ɜː/音。
注意：/ɜː/个长元音，这个音听起来和汉语的"饿"相似，要注意的是在美国英语中该音后常常加上一个r的音，类似北京方言的儿发音。
Byrd【bɜrd】
first【fɜrst】
were【wɜr】
certain【ˈsɜrtən】
练习感悟：
@01林-贵州-项目管理 今天读的棒棒哒呀，就是最后一句，the aircraft，the endless，the都可以发音成【ði】
@[00]-纸多糖-廊坊-学生 photograph【ˈfoʊtəˌgræf】，crash【kræʃ】，aircraft【ˈɛrˌkræft】，æ的发音都要注意一下
@[00]ManHK-南宁-学生（英音） ordered，ed没有发音，其他棒棒哒
1.今天好像错误比较多，确实今天念得也不是那么通畅，感觉还是音标刷的不够好吧。我还是好好练练小伙伴们给我指出的那些单词去吧。
第28天打卡！
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