练习材料：
Lesson 87 A perfect alibi
'At the time the murder was committed, I was traveling on the 8.0 o'clock train to London,' said the man.
'Do you always catch 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 confirm that I was there on time.'
' Would a later train get you to work on time ?' asked the inspector. ' I suppose it would, but I never catch a later train.'
'At what time did you arrive at the station ?'
'At ten to eight. I bought a paper and waited for the train.' 'And you didn't notice anything unusual ?'
' Of course not.'
'I suggest,' said the inspector, 'that you are not telling the truth. I suggest that you did not catch the 8.0 o'clock train, but that you caught the 8.25 which would still get you to work on time. You see, on the morning of the murder, the 8.0 o'clock train did not run at all. It broke down at Ferngreen station and was taken off the line.'
əˈpɜrˌfɪkt ˈæləˌbaɪ
æt ðə taɪm ðəˈmɜrdər wʌz kəˈmɪtəd, aɪ wʌz ˈtrævəlɪŋ ɑn ði 8.0 əˈklɑk treɪn tu ˈlʌndən,' sɛd ðə mæn.
du ju ˈɔlˌweɪz kæʧ sʌʧən ˈɜrli treɪn?' æskt ði ɪnˈspɛktər.
ʌv kɔrs aɪ du,' ˈænsərd ðə mæn.' aɪ mʌst bi æt wɜrk æt 10.0 əˈklɑk. maɪɪmˈplɔɪər wɪl kənˈfɜrm ðæt aɪ wʌz ðɛr ɑn taɪm.'
' wʊd əˈleɪtər treɪn gɛt ju tu wɜrk ɑn taɪm ?' æskt ði ɪnˈspɛktər. '
aɪ səˈpoʊz ɪt wʊd, bʌt aɪˈnɛvər kæʧəˈleɪtər treɪn.'
æt wʌt taɪm dɪd ju əˈraɪv æt ðəˈsteɪʃən ?'
æt tɛn tu eɪt. aɪ bɔt əˈpeɪpər ænd ˈweɪtɪd fɔr ðə treɪn.' ænd ju dɪdnt ˈnoʊtɪs ˈɛniˌθɪŋ ənˈjuʒˌuəl ?'
' ʌv kɔrs nɑt.'
aɪ səgˈʤɛst,' sɛd ði ɪnˈspɛktər, ðæt ju ɑr nɑt ˈtɛlɪŋðə truθ. aɪ səgˈʤɛst ðæt ju dɪd nɑt kæʧði 8.0 əˈklɑk treɪn, bʌt ðæt ju kɔt ði 8.25 wɪʧ wʊd stɪl gɛt ju tu wɜrk ɑn taɪm. ju si, ɑn ðəˈmɔrnɪŋ ʌv ðəˈmɜrdər, ði 8.0 əˈklɑk treɪn dɪd nɑt rʌn æt ɔl. ɪt broʊk daʊn æt Ferngreen ˈsteɪʃən ænd wʌz ˈteɪkən ɔf ðə laɪn.'
任务配置：L0+L4
知识笔记：
alibi 不在犯罪现场证明
murder 谋杀
commit 犯罪；犯错
inspector 探长
suppose 假设；认为；猜测
confirm 确认
take off 取消班次