pera this afternoon. 今天下午我和爸爸打算去看歌剧。2) 表示根据目前某种迹象判断，某事非常有可能发生，表示推测。Look! There come the dark clouds. It is going to rain. 瞧！乌云密集。天要下雨了。过去将来时1. 概念：立足于过去某一时刻，从过去看将来，常用于宾语从句中。2. 时间状语：the next day(morning, year),the following month(week),etc. 3. 基本结构：①was/were/going to + do；②would + do.否定形式：①was/were/not + going to + do;②would + not + do.一般疑问句：①was或were放于句首；②would 提到句首。4. 用法1) “would+动词原形”常表示主观意愿的将来。例如：He said he would come to see me.他说他要来看我。He told me he would go to Beijing.他告诉我他将去北京。2) “was/ were+going to+动词原形”常表示按计划或安排即将发生的事。例如：She said she was going to start off at once.她说她将立即出发。I was told that he was going to return home.有人告诉我他准备回家。此结构还可表示根据某种迹象来看，很可能或即将发生的事情。例如：It seemed as if it was going to rain.看来好像要下雨。3) come， go， leave， arrive， start等瞬时动词动词可用过去进行时表示过去将来的含义。例如：He said the train was l