练习材料：
Lesson87 A perfect alibi
'At the time themurder was committed, I was traveling on the 8.0 o'clock train to London,' saidthe man.
'Do you alwayscatch such an early train?' asked the inspector.
'Of course I do,'answered the man.' I must be at work at 10.0 o'clock. My employer will confirmthat I was there on time.'
' Would a later train get you to work ontime ?' asked the inspector. ' I suppose it would, but I never catch a latertrain.'
'At what time didyou arrive at the station ?'
'At ten to eight.I bought a paper and waited for the train.' 'And you didn't notice anythingunusual ?'
' Of course not.'
'I suggest,' saidthe inspector, 'that you are not telling the truth. I suggest that you did notcatch the 8.0 o'clock train, but that you caught the 8.25 which would still getyou to work on time. You see, on the morning of the murder, the 8.0 o'clocktrain did not run at all. It broke down at Ferngreen station and was taken offthe line.'
ə ˈpɜːfɪkt ˈælɪbaɪ
æt ðə taɪm ðə ˈmɜːdəwɒz kəˈmɪtɪd, aɪ wɒz ˈtrævlɪŋ ɒn ðiː 8.0 əˈklɒk treɪn tuː ˈlʌndən,' sɛd ðə mæn.
duː juː ˈɔːlweɪz
kæʧ sʌʧ ən ˈɜːli treɪn?' ɑːskt ði ɪnˈspɛktə.
ɒv kɔːs aɪ duː,' ˈɑːnsəd ðə mæn.' aɪ mʌst biː æt wɜːk æt 10.0 əˈklɒk.maɪ ɪmˈplɔɪə wɪl kənˈfɜːm ðæt aɪ wɒz ðeər ɒn taɪm.'
' wʊd ə ˈleɪtə treɪn
gɛt juː tuː wɜːk ɒn taɪm ?' ɑːskt ði ɪnˈspɛktə. ' aɪ səˈpəʊz ɪt wʊd, bʌt aɪ ˈnɛvə kæʧ ə ˈleɪtə treɪn.'
æt wɒt taɪm dɪdjuː əˈraɪv æt ðə ˈsteɪʃən ?'
æt tɛn tuː eɪt. aɪbɔːt ə ˈpeɪpər ænd ˈweɪtɪd fɔː ðə treɪn.' ænd juː dɪdnt ˈnəʊtɪs ˈɛnɪθɪŋ ʌnˈjuːʒʊəl?'
' ɒv kɔːs nɒt.'
aɪ səˈʤɛst,' sɛd
ði ɪnˈspɛktə, ðæt juː ɑː nɒt ˈtɛlɪŋ ðə truːθ. aɪ səˈʤɛst ðæt juː dɪd nɒt kæʧ ðiː 8.0 əˈklɒktreɪn, bʌt ðæt juː kɔːt ðiː 8.25 wɪʧ wʊd stɪl gɛt juː tuː wɜːk ɒn taɪm. juːsiː, ɒn ðə ˈmɔːnɪŋ ɒv ðə ˈmɜːdə, ðiː 8.0 əˈklɒk treɪn dɪd nɒt rʌn æt ɔːl. ɪt brəʊkdaʊn æt Ferngreen ˈsteɪʃən ænd wɒz ˈteɪkən ɒf ðə laɪn.'
任务配置：L0+L1+ L4
知识笔记：
单词：1、alibi：不在场证明，2、commit：犯罪，承诺，3、inspector：检查员，监工，4、confirm：确认，证实，肯定，5、suggest：建议，暗示，
音标：/s/ 双唇微开，上下齿接近于合拢状态，舌尖抵住下龈，气流从牙缝送出。
练习感悟： 对话类的文章就是比较简单