1、练习材料：

If you park your car in the wrong place, a traffic policeman will soon find it. You will be very lucky if he lets you go without a ticket. However, this does not always happen. Traffic police are sometimes very polite. During a holiday in Sweden, I found this note on my car: 'sir, we welcome you to our city. This is a "No Parking" area. You will enjoy your stay here if you pay attention to our street signs. This note is only a reminder.' If you receive a request like this, you cannot fail to obey it!

2、任务配置：L0+L1+L4

    L0：

[ɪf] [jʊ] [pɑrk] [jər] [kɑr] [ɪn] [ðə] [rɔŋ] [pleɪs], [ə] [ˈtræfɪk] [pəˈlismən] [wɪl] [sun] [faɪnd] [ɪt]. [jʊ] [wɪl] [bi] [ˈvɛri] [ˈlʌki] [ɪf] [hi] [lɛts] [jʊ] [goʊ] [wɪˈθaʊt] [ə] [ˈtɪkət]. [ˌhaʊˈɛvər], [ðɪs] [dəz] [nɑt] [ˈɔlˌweɪz] [ˈhæpən]. [ˈtræfɪk] [pəˈlis] [ər] [səmˈtaɪmz] [ˈvɛri] [pəˈlaɪt]. [ˈdʊrɪŋ] [ə] [ˈhɑləˌdeɪ] [ɪn] [ˈswidən], [aɪ] [faʊnd] [ðɪs] [noʊt] [ɑn] [maɪ] [kɑr]: [sɜr], [wi] [ˈwɛlkəm] [jʊ] [tʊ] [ˈaʊər] [ˈsɪti]. [ðɪs] [ɪz] [eɪ] "[noʊ] [ˈpɑrkɪŋ]" [ˈɛriə]. [jʊ] [wɪl] [ɛnˈʤɔɪ] [jər] [steɪ] [hir] [ɪf] [jʊ] [peɪ] [əˈtɛnʃən] [tʊ] [ˈaʊər] [strit] [saɪnz]. [ðɪs] [noʊt] [əz] [ˈoʊnli] [ə] [riˈmaɪndər].' [ɪf] [jʊ] [rəˈsiv] [ə] [rɪˈkwɛst] [laɪk] [ðɪs], [jʊ] [ˈkænɑt] [feɪl] [tʊ] [oʊˈbeɪ] [ɪt]!

L1:

ɪ与i，松元音与紧元音，不在于音的长短。

L4 ：

r和l还是傻傻发不清楚。