1. What were your family doing when the typhoon hit? 当台风来临的时候，你的家人正在做什么？
【感知】(1)Xinyi was having dinner at the time of the flood. 当洪水发生时，欣怡正在吃晚饭。
(2)We were driving home when the strong winds started. 我们正在开车回家，这时大风突然刮了起来。
(3)It was raining hard while we were driving back. 我们开车返回时，雨下得很大。
【思考】(1)以上句子是时态。
(2)其结构是：
(3)过去进行时用法：① 表示过去某个时间正在发生的动作。
He was cooking at six yesterday evening. 昨天晚上六点，他正在做饭。
② 表示过去某段时间正在发生的动作。
I was staying here from March to May last year. 去年从 3 月到 5 月，我一直待在这里。
(4)通过以上句子可以发现，与过去进行时连用的时间状语有与。
(5)请比较：
第一组：① He watched TV last night. (过去时间段 last night，用一般过去时)
② He was watching TV at nine last night. (具体时间 at nine + 过去时间段 last night，用过去进行时)
第二组：① We were driving home when the strong winds started. (在 when 引导的时间状语从句中，动作多以非延续性为主)
② While we were driving home，the strong winds started. (在 while 引导的时间状语从句中，动作多以延续性为主)
【运用】
(1)My uncle books in the room at this time yesterday.
A. was seeing
B. is reading
C. read
D. was reading
(2)Sally took a photo of her friends while they together.
A. play
B. are playing
C. have played
D. were playing
(3)I was working when the earthquake .
A. starts
B. started
C. was starting
D. is starting

思考: (1) 过去进行时 (2) was/were + doing (4) when; while
运用: (1) D (2) D (3) B