—While Linda was sleeping, Jenny __w_a_s_h_e_l_p_in_g_(help) Mary with math.
延续性动词 (表示时间段)
While John was riding, Mary was running. While the girl was eating, her mother was cleaning the room
4. 过去进行时和现在进行时的区别
现在进行时
过去进行时
含义:表示现在正在进行的 含义:表示过去某一时刻或某
动作。
一段时间正在进行的动作。
结构:is/am/are + doing
结构: was/were + doing
时间状语: now, right now, at the moment
时间状语: at 9 last night, at that /this time, at that moment
(sun) but the neighborhood was in a mess. Families and neighbors joined to help clean it up together.
New words
have a look (at) 看一看=look at icy adj. 冰冷的;覆盖着冰的;ice kid v.开玩笑;欺骗 kidding
过去进行时表示过去某一时刻或某一段时间内正在进行或发生的动作。
When the teacher came in , she was reading. 短暂性动词 When the teacher left, she was doing her homew(or表k.示时间点)