Imagine what today's life would be like if Alexander Bell__ the telephone more than 130 years ago.应填didn't invent 还是填一个过去完成时
问题描述：
Imagine what today's life would be like if Alexander Bell__ the telephone more than 130 years ago.
应填didn't invent 还是填一个过去完成时
答
过去完成时。
你看Imagine what today's life would be 是would!
虚拟语气的句子。时态往前推。从句一般比主句的时态靠前。
过去完成时在过去时之前。记着一个时间轴就OK~！
答
hadn't invented
过去完成时