新SAT语法冒号有哪些作用

新SAT语法冒号有哪些作用

冒号的作用既可以是完整句，也可以是不完整的。
　　一、冒号的定义

　　colon：a punctuation mark; used chiefly to direct attention to matter (as a list, explanation, quotation, or amplification) that follows.引出下文的解释说明或者要引用的内容。
　　二、冒号的用法
　　冒号后面既可以是完整句，也可以是不完整的。
　　(1)What follows a colon may be a clause. (冒号后的内容通常对前面的句子起解释说明作用)
　　e.g. He is a great athlete: he plays soccer, baseball and basketball.
　　(2)or a group of words that cannot stand by themselves.
　　e.g. He plays many sports: soccer, baseball and basketball.
　　注意：冒号后的从句的常见功能是：进一步解释说明主句。
　　例题详解
　　例题1：
　　It took me by surprise, then, when my favorite exhibit at the museum was one of it’s tiniest; the Thorne Miniature Rooms.
　　A) NO CHANGE
　　B) its tiniest;
　　C) its tiniest:
　　D) it’s tiniest,
　　答案：C
　　解析：根据语意，很明显“the Thorne Miniature Rooms”是在说明“the tiniest”的是哪个，符合冒号最常见的用法一解释说明。此用法为最常见考点。
　　例题2：
　　The summer of 2012 was the warmest in 170 years, records show. But Jason [15] Box, an associate professor of geology at Ohio State believes that another factor added to the early [16] thaw; the “dark snow”
　　[16]
　　A) NO CHANGE
　　B) thaw; and it was
　　C) thaw:
　　D) thaw: being
　　答案：C
　　解析:because the colon signals that the other factor that contributed to the early thaw is about to be provided.
　　因为thaw“消融”后面的the “dark snow”是对前面another factor“另一种因素的”的解释说明，这种“dark snow”就是另一种因素。

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