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at that moment表示“在那时；就在那一刻”是过去进行时的标志。过去进行时表示过去在某一时间段或某一段时间内正在发生或进行的动作或状态。  一、过去进行时定义 1.表示过去某个时刻正在进行的动作。 He was having breakfast at six o’clock yesterday morning.昨天早上六点他正在吃早饭。 2.表示过去某个时间段正在进行的动作。 He was writing stories the whole morning.他整个上午都在写故事。 二、过去进行时结构 1.肯定结构：主语+was/were+doing+其它 (1)I was watching TV at eight last night. (2)He was having breakfast at seven this morning. 2.否定结构：主语+was/were+not+doing+其它 (1)I was not watching TV at eight last night. (2)He was not having breakfast at seven this morning. 3.一般疑问句：Was/Were+主语+doing+其它? (1)-Were you watching TV at eight last night? -Yes,I was./No,I wasn’t. (2)-Was he having breakfast at seven this morning? -Yes,he was./No,he wasn’t. 4.特殊疑问句：疑问词+was/were+主语+doing+其它? 三、时间标志 1.at+具体时刻+过去时间(at five last Saturday) 2.at this time+过去时间(at this time yesterday) 3.过去时间段(from nine to ten last evening) 4.at that time/moment 5.when&while引导的过去时间状语从句 (责任编辑：admin) |