练习材料：

The plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamonds from South Africa. A few hours earlier, someone had told the police that thieves would try to steal the diamonds. When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield. Two men took the parcel off the plane and carried it into the Customs House. While two detectives were keeping guard at the door, two others opened the parcel. To their surprise, the precious parcel was full of stones and sand!

ðə pleɪn wʌz leɪt ænd dɪˈtɛktɪvz wɜr ˈweɪtɪŋ æt ði ˈɛrˌpɔrt ɔl ˈmɔrnɪŋ. ðeɪ wɜr ɪkˈspɛktɪŋ ə ˈvæljəbəl ˈpɑrsəl ʌv ˈdaɪməndz frʌm saʊθ ˈæfrəkə. ə fju ˈaʊərz ˈɜrliər, ˈsʌmˌwʌn hæd toʊld ðə pəˈlis ðæt θivz wʊd traɪ tu stil ðə ˈdaɪməndz. wɛn ðə pleɪn əˈraɪvd, sʌm ʌv ðə dɪˈtɛktɪvz wɜr ˈweɪtɪŋ ɪnˈsaɪd ðə meɪn ˈbɪldɪŋ waɪl ˈʌðərz wɜr ˈweɪtɪŋ ɑn ði ˈɛrˌfild. tu mɛn tʊk ðə ˈpɑrsəl ɔf ðə pleɪn ænd ˈkærid ɪt ˈɪntu ðə ˈkʌstəmz haʊs. waɪl tu dɪˈtɛktɪvz wɜr ˈkipɪŋ gɑrd æt ðə dɔr, tu ˈʌðərz ˈoʊpənd ðə ˈpɑrsəl. tu ðɛr sərˈpraɪz, ðə ˈprɛʃəs ˈpɑrsəl wʌz fʊl ʌv stoʊnz ænd sænd!

任务配置：

L0＋L1＋L2＋L3＋L4

知识笔记：

今天练习的是/n/的发音。

1）微微张开嘴巴，舌尖紧贴上齿龈，形成阻碍。

2）气流从鼻腔泄出，同时声带震动发出声音。

单词：plane，morning，diamonds，when，main，men，opened，stones，and，sand

感觉以前虽然有读这个音的意识，但往往嘴型没有到位，舌尖没有紧贴口腔上部。

练习感悟：

今天成功实现五阶全开！！！心情还是很激动的，但花的时间也着实不少，有效就最棒。

认真练了音标以后去听别人的录音，明显会觉得对一些音节很敏感。应该也是听力增强的表现。