understood what he said
Hast du verstanden, was er gesagt hat?
Did you understand what he said?
Ich habe nicht verstanden, was er gesagt hat.
I didn't understand what he said.
Ich habe nicht mal die Hälfte von dem verstanden, was er gesagt hat.
I didn’t even understand half of what he said.
Haben Sie verstanden, was er gesagt hat?
Did you understand what he said?
Habt ihr verstanden, was er gesagt hat?
Did you understand what he said?