嗯~公布下,是since本身的含义问题。since可以表示'从……之后',也可以表示'因为'。但是两种意思其实也是藕断丝连的,所以since表示原因的时候也有“顺其自然”的意思。所以在OG12的第一题,用The glass house mountains in queensland ,Australia,were sighted in 1770 by the English navigator Captain James Cook, who so named them supposedly since their sheer wet rocks glisteded like glass. 而给某个山命名并非顺其自然,所以用since并不合适。 since可以这么用: 1. Since you are unable to answer, perhaps we should ask someone else. (LDOCE) 2. As is the case with traditional pharmacies, prescriptions are the cornerstone of a successful on-line drugstore, since it is primarily prescriptions that attract the customers, who then also buy other health-related items. 这两种主句从句之间的关系都是,从句发生以后,基本上都会导致主句的结果。而不是想OG12-1那样,看到像玻璃闪耀可能我们还会命名“闪耀山”。