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You’d better look up the new word in a dictionary _____ you don’t know it ?
A.ifB.thatC.thoughD.whether
A

试题分析:if 是否,如果;that 因为,以至于;though虽然,尽管;whether是否。句意:如果你不认识它,你最好在词典里面查一查这个新单词。结合语境可知选A。
点评:连词在句子中主要起联系上下文的作用,他们之间的区别就是表示逻辑关系的不同,所以在解题时先要理解上下文含义,然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多,语义之间还有交叉,熟记其基本应用规则,了解其区别,注意固定搭配对象,是做好此类题型的关键。
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