题目
It ’ s so cold today ． If it should get warmer this afternoon ， I ＿ my car ． A ． would have washed B ． would wash C ． must have washed D ． must wash
It ’ s so cold today ． If it should get warmer this afternoon ， I ＿ my car ．
A ． would have washed B ． would wash C ． must have washed D ． must wash
题目解答
答案
B
解析
本题考查虚拟语气的用法。关键点在于识别条件句中的should，它表示与现实情况相反的假设，此时主句需使用would + 动词原形的结构。需注意虚拟语气与推测动词（如must）的区别。
条件句分析
- 条件句结构：
If it should get warmer this afternoon中的should表示假设一个与当前事实相反的情况（实际天气冷）。 - 虚拟语气规则：当条件句以
should开头时，主句应使用would + 动词原形表示对未来的虚拟假设。
选项辨析
- A. would have washed：表示已完成的动作，但句中强调“如果变暖会洗车”（动作尚未发生），排除。
- B. would wash：符合虚拟语气结构，正确表达假设情况下的动作。
- C. must have washed / D. must wash：
must表推测或义务，与虚拟语气语境不符，排除。