"What was done by him?"

Translation: Apa yang dilakukan olehnya?

[donny309620]

A better, conversational translation in English woud be: "What did he do?"

[ItsryneT]

Yup, "what was done by him" is have a closer meaning to "apa yang telah dilakukan olehnya"

[JorisHeylen]

Why is 'yang' absolutely necessary here?

[navysa]

because in this sentence 'yang' has a function as a relative pronoun.

.....yang dilakukan olehnya = .....which was done by him

'yang' is neede because you want to give stress on the the activities done by him

another example:
Anak yang berdiri di belakangku adalah Rina= The kid who is standing behind me is Rina

[Bev425285]

Dilakukan vs digunakan?

[Bev425285]

Please comment on the difference between dilakukan and digunakn? And why not apakah here?

[navysa]

dilakukan: ar/is/am/was/were + done, example: The surgery was done by Dr. Tina ( Operasinya dilakukan oleh Dr. Tina)

digunakan: ar/is/am/was/were+ used, example: This scalpel was used by Dr. Tina (Pisau bedah ini digunakan oleh Dr. Tina

I think apakah should be accepted here. Because it's gramatically correct if you say " Apakah yang telah dilakukan olehnya?