sagen, was geschehen ist

tell what happened

→ sagen
phrase Rare #38,236
tell what happened Used when reporting or asking about a past event. “Was geschehen ist” literally means “what has happened”; “geschehen” is somewhat more formal than “passieren.”
GE: Ihr solltet mir lieber sagen, was geschehen ist.
EN: You should tell me what happened.

Du darfst Tom nicht sagen, was geschehen ist.

You mustn't tell Tom what happened.

Ihr solltet mir lieber sagen, was geschehen ist.

You’d better tell me what happened.

Jemand muss Tom sagen, was geschehen ist.

Someone has to tell Tom what happened.

Ich habe Tom das Versprechen abgenommen, niemandem zu sagen, was geschehen ist.

I got Tom to promise not to tell anyone what had happened.

Ich habe beschlossen, Tom zu sagen, was geschehen ist.

I decided to tell Tom what happened.