they wished that the boy the volin last night 为什么选择hadn't practised playing
问题描述：
they wished that the boy the volin last night 为什么选择hadn't practised playing
答
wish后的从句要用虚拟语气.
wished已经是过去时了,说明是过去希望,所以从句部分是对过去的虚拟,用过去完成时hadn't practised playing
还有,practise+V-ing