问题描述:
Yesterdayhewouldmademesanwichesandwouldbroughtmeacupofcoffee.
whenihadpromblemswithmyhomeworklastnight,myfatherwoulddiditforme.]
这上面两句跟下面这一句
Eachtimeigavehimaproblemhewouldsolveitforme.
上面两句跟下面这句的区别在哪里?为什么一二两句,would后面跟过去式,而第三句,would后面却不跟过去式呢?