(英文) how; not used in interrogative questions, but rhetorical questions, to express negation. Used to deny the following statement, as well as implying the statement is considered totally impossible to happen.
(粵) 隻錶咁貴，我邊度買得起啊？ (zek3 biu1 gam3 gwai3, ngo5 bin1 dou6 maai5 dak1 hei2 aa3?)
(英) The watch is too expensive, how could I possibly afford it?
(粵) 我邊度記得佢電話啊？ (ngo5 bin1 dou6 gei3 dak1 keoi5 din6 waa2 aa3?)
(英) How could I remember his phone number?