father 本身不是專有名詞。 但是若是大寫，就變成專有名詞，指「我爸」: I just talked to Father tonight.= I just talked to my father tonight. Father=...
[How is your father doing? (a) Fine, thank you. (b) He is...you doing? 這類的問句。 而本題既然特指 your father 才是問安的對象，那用 (a) 句型回答，最好是說 He...
father-in-law是指配偶ㄉ父親 in-law是強調非血親ㄉ親戚 此單字ㄉ所有格為:father-in-law's 複數的所有格:father-in-laws'