核心问题
It would be nice if you helped me a bit with the housework. 上句中的虚拟语气是表示与现在或将来事实相反吗？也就是说，说话人认为 you 不会帮助他吗？
词典解答
英语的虚拟语气还有一种用法：婉转、礼貌地提出请求和建议，或者表示真实的愿望，并无反事实的含义。上句的意思是：你要是能帮助我做些家务，那就太好了。类例：
练习题
请做下面的英语试题：
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Had Paul received six more votes in the last election, he ____ our chairman now. A. must have been B. would have been C. were D. would be(全国研考,92-24)
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If you ____ Jerry Brown until recently, you'd think the photograph on the right was strange. A. shouldn't contact B. didn't contact C. weren't to contact D. hadn't contacted(全国研考,93-21)