请帮助分析一下句式结构 如果方便请翻译一下
问题描述：
请帮助分析一下句式结构 如果方便请翻译一下
Butwhenever my patient begins to count the carriages in her funeral procession I subtract 50 per cent from the curative power of medicines.
答
But承上启下.whenever my patient begins to count the carriages in her funeral procession是状语从句修饰谓语动词subtract；I subtract 50 per cent from the curative power of medicines是句子的主句.翻译（大...