wˌɛn ɹˈæʃi sˈɛz sˈɪmpli "maɪ tˈiːtʃɚ" wɪðˌaʊt nˈeɪmɪŋ ˌɛni wˈʌn hiː ɪz ˈɔːlweɪz ɹᵻfˈɜːɹɪŋ tə hɪz tˈiːtʃɚ jˈɑːkɑːv.
When Rashi says simply "my teacher" without naming any one he is always referring to his teacher Yaakov.