题目内容
13. we are allowed ,we can't drink any beer.( )A. | As long as; to do | B. | Unless; to | ||
C. | Until; doing | D. | On condition that; doing so |
分析 我们不能喝任何啤酒,除非我们得到允许.
解答 答案是B.本题考查连词和动词不定式的用法;as long as 只要;unless除非,如果不;until直到…时候;on conditioned that 条件是;根据上下文的逻辑,"除非"得到允许,否则我们不能喝啤酒,所以第一空选用Unless; 第二空是动词不定式的省略;句中运用了短语allow sb.to do的被动结构be allowed to do,为了避免重复,常常省去不定式后面的动词,只保留不定式符号to,所以答案是B.
点评 引导状语从句的连词的选择最重要的是搞清上下文的逻辑关系.非谓语动词的考查首先判断选项中的动词在句中是以谓语还是非谓语形式出现,然后根据选项在句中的功能结合非谓语的基本用法做出合理的判断.
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