过去时表示过去发生的动作或状态,有以下三种形式:简单过去时:表示过去某个时间发生的动作,构成方式为“主语+动词过去式”,例如:“I went to Beijing last week.” “She played the piano when she was young.”
While running regularly can’t make you live forever, the review says it __ more effective at lengthening life than walking, cycling or swimming.