Mr. White is a good friend of

Mr. White is a good friend of ___
(A)me (B)my father (C)my sister\'s (D)her
請問這題答案是(C)
那麼B為什麼不行呢?
意思是懷特先生是我姊姊(妹妹)\"的\"好朋友...所以要+s嗎?
我主要還想知道這裡of的用法!!謝謝
Update: Do you have your own room? = Do you have room yourself?
後面的等於對嗎?^^"反身代名詞好像只能加在主格和受格的位置..有點怪怪的....
還有這句 : They themselves cooked it all.
這句 themselves 的用法為什麼是對的呢?
Update 2: Those who help ____ will be helped by others.
(自助者,人助之)
(A)himself (B)yourselves (C)themselve (D) ourselves
答案是(C)
那麼(A)錯在哪呢?
Update 3: my father's 這樣的話也ok囉?
Update 4: Hi,Judy. Hi,Jason. Come on in. Make yourselves at home.

yourselves 為何不能用yourself呢?
翻中文是??
Update 5: 阿~Those..不好意思
Update 6: 嗯嗯~呵呵..我把它當成對話了..
2 answers 2