原因状语从句练习题

〔考题1〕 ____ you’ve got a chance, you might as well make full use of it. (1999)
A. Now that B. After C. Although D. As soon as
〔答案〕 A
〔解析〕 主句与从句之间存在因果关系， 且“you’ve got a chance”表示一个显而易见的原因， 因此应选用表原因的now that。
〔考题2〕 He found it increasingly difficult to read, ____ his eyesight was beginning to fail. (2006北京)
A. and B. for C. but D. or
〔答案〕 B
〔解析〕 “his eyesight was beginning to fail”是“he found it increasingly difficult to read”的原因， 因此本题应选用可以表示原因的连词for引导原因状语从句。
〔考题3〕 A man cannot smile like a child, ____ a child smiles with his eyes, while a man smiles with his lips alone. (2006湖南)
A. so B. but C. and D. for
〔答案〕 D
〔解析〕 下划线处之后的句子补充说明“a man cannot smile like a child”的原因， 应选用for表原因。