(A) active vs. (P) passive
passive = vorm to be + vt.dw.
(A) iemand doet iets / (P) iets wordt gedaan > onbekend/onbelangrijk wie het doet
Present simple 1/5
(A) I do my homework. / (P) My homework is done (by me). do = tt > tt van to be = am/are/is + vtdw van do = done
Past simple 2/5
A) The spider built the web. / (P) The web was built (by the spider). built = vt > vt van to be = was/were + vtdw van built = built
Present perfect 3/5
(A) We have done the dishes. / (P) The dishes have been done (by us). have done = pr. perf. > pr. perf. van to be = have/has been + vtdw van done = done