题目内容
1.-How long have you been away from your hometown?-It has been twenty years ________ I went to college and work in Beijing.( )
| A. | unless | B. | though | C. | since | D. | until |
分析 --你离开家乡多久了?
--自从我到北京上大学并参加工作已经20年了.
解答 答案:C;
根据问句用的是疑问词how long,即"多长时间",且设空处前面的主句是现在完成时,设空处后面的I went to college and work in Beijing是一个一般过去时的句子,所以用since引导,其他几个选项unless"除非";though"虽然";until"直到",都不符合句意,故选C
点评 本题主要考查连词的用法,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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