(eng) to have even done; to have gone so far as to (only used in subordinate clauses to emphasise the important of an action)
(yue) 應承得，就唔可以反口。 (jing1 sing4 dak1, zau6 m4 ho2 ji5 faan2 hau2.)
(eng) Having (gone so far as to have) agreed on this, I cannot break my promise.
(yue) 報得名嘅人，我都預咗嚟㗎喇。 (bou3 dak1 meng2 ge3 jan4, ngo5 dou1 jyu6 zo2 lai4 gaa3 laa3.)
(eng) For people who have gone so far as to have registered. I will expect them to come.
(yue) 做得一樣，唔爭在做多樣啦。 (zou6 dak1 jat1 joeng6, m4 zeng1 zoi6 zou6 do1 joeng6 laa1.)
(eng) Having completed one, you shouldn't mind doing just to do one more.