(A) active vs. (P) passive
passive = vorm to be + vt.dw.
(A) iemand doet iets / (P) iets wordt gedaan > onbekend/onbelangrijk wie het doet
Past perfect 4/5
(A) I had warned you. / (P) You had been warned (by me). had warned = past perf. > past perf. van to be = had been + vtdw van warned = warned
Future 5/5
A) They will inform him. / (P) He will be informed (by them). will inform = future > future van to be = will be + vtdw van inform = informed