1、练习材料：Lesson22 A glass envelope（44s）
My daughter, Jane, never dreamed of receiving a letter from a girl of her own age in Holland. Last year, we were traveling across the Channel and Jane put a piece of paper with her name and address on it into a bottle. She threw the bottle into the sea. She never thought of it again, but ten months later, she received a letter from a girl in Holland. Both girls write to each other regularly now. However, they have decided to use the post-office. Letters will cost a litt1e more, but they will certainly travel faster.
音标翻译：
maɪ ˈdɔtər, ʤeɪn, ˈnɛvər drimd ʌv rəˈsivɪŋ ə ˈlɛtər frʌm ə gɜrl ʌv hɜr oʊn eɪʤ ɪn ˈhɑlənd. læst jɪr, wi wɜr ˈtrævəlɪŋ əˈkrɔs ðə ˈʧænəl ænd ʤeɪn pʊt ə pis ʌv ˈpeɪpər wɪð hɜr neɪm ænd ˈæˌdrɛs ɑn ɪt ˈɪntu ə ˈbɑtəl. ʃi θru ðə ˈbɑtəl ˈɪntu ðə si. ʃi ˈnɛvər θɔt ʌv ɪt əˈgɛn, bʌt tɛn mʌnθs ˈleɪtər, ʃi rəˈsivd ə ˈlɛtər frʌm ə gɜrl ɪn ˈhɑlənd. boʊθ gɜrlz raɪt tu iʧ ˈʌðər ˈrɛgjələrli naʊ. ˌhaʊˈɛvər, ðeɪ hæv ˌdɪˈsaɪdɪd tu juz ðə poʊst-ˈɔfəs. ˈlɛtərz wɪl kɑst ə lɪt1i mɔr, bʌt ðeɪ wɪl ˈsɜrtənli ˈtrævəl ˈfæstər.
2、任务配置：L0+L1
3、知识笔记：
练习/θ/的发音：
发音时把舌尖放在上下齿之间，舌尖轻触上齿，略略露出齿外，气流由舌齿间泻出，摩擦成音。
这是个清辅音，送气强，声带不振动。
要注意，发这个音主要是舌尖与上齿之间的摩擦，所以千万不要紧紧咬住舌尖，只要轻轻咬一咬就行了！
音标相关单词练习：
threw /θru/
thought /θɔt/
months /mʌnθs/
Both /boʊθ/
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