I saw him come где тут инфинитив

В этом предложении употреблён инфинитив \"come\". Предложение переводится так: Я видел, как он пришёл.I didn\'t see him come.Did I see him come?Did I see him come or leave?Whom did I see come?What did I see?Who saw him come?I saw him come, didn\'t I?