YOU SAID:

dave was discombobulated to find his neighbours going postal

INTO JAPANESE

彼の隣人が郵便に行くのを見つけるためにデイブは混乱しました

BACK INTO ENGLISH

Dave was confused to find his neighbor go to the post

INTO JAPANESE

デイブは隣人がポストに行くのを見つけて混乱していました

BACK INTO ENGLISH

Dave was confused by finding his neighbor going to the post

INTO JAPANESE

デイブは隣人がポストに行くのを見つけることによって混乱しました

BACK INTO ENGLISH

Dave was confused by finding his neighbor going to the post