【Language Focus】
A Heavy Snowstorm
I'm Ted. Last night, a heavy snowstorm hit our city. We 1. (have) dinner at home when it started. At that time, the wind 2. (blow) hard outside, and big snowflakes(雪花) 3. (fall) from the sky quickly. My little sister 4. (watch) a cartoon on TV, but she soon felt scared because the window was making a loud noise.
My dad looked out of the window and found the street was already white. My mum 5. (call) my grandparents to tell them about the snowstorm while she 6. (make) some hot tea. My brother and I 7. (prepare) some candles in case(以防万一) the electricity went off. We 8. (talk) about what to do if the snow kept falling when the lights suddenly went out.
While we 9. (light) the candles, the neighbour next door was knocking at our door. He said his family needed some help, and my dad went to help him at once. All night, we 10. (stay) together at home, waiting for it to stop.
任务一:请在横线处写出动词的过去进行时形式。
任务二:列出短文中所有过去进行时的动词,完成下列表格。

我发现:
3. 过去进行时的结构:was/were+动词的 。
4. 可以连接短暂动作和持续动作。
5. 强调两个持续动作同时发生。

任务一：
1. were having
2. was blowing
3. were falling
4. was watching
5. was calling
6. was making
7. were preparing
8. were talking
9. were lighting
10. were staying
任务二：
1. was blowing; was watching; was calling; was making
2. were having; were falling; were preparing; were talking; were lighting; were staying
3. 现在分词(doing形式)
4. when
5. while

本题重点考查八年级核心语法过去进行时的构成与用法：过去进行时表示过去某一特定时间点或时间段正在进行的动作，基本结构为was/were + 动词的现在分词形式。其中when可连接一个短暂动作和一个过去正在进行的持续动作，while可强调两个过去同时进行的持续动作。任务一根据主语的人称和数匹配对应的be动词，再搭配动词的现在分词即可得到正确的过去进行时形式；任务二根据be动词是was还是were对所有过去进行时的动词短语分类，再结合语法规则补全知识点总结即可。