过去进行时是英语语法中一个重要的时态，它用来描述在过去某一时间点正在进行的动作或状态。在写作和口语中，我们常常需要使用到过去进行时来表达过去的情况。在这篇文章中，我们将会学习如何构造过去进行时的否定句，同时提供一些例句以帮助大家更好地理解。
构造过去进行时的否定句
英语中构造过去进行时的否定句非常简单，只需要在助动词“was/were”后面加上“not”，就可以构成否定句了。例如：
- I was not studying English at 8pm last night.
- They were not playing soccer when it started to rain.
需要注意的一点是，缩写形式“wasn't/weren't”也可以用于过去进行时的否定句中。例如：
- She wasn't watching TV when I called her.
- We weren't eating lunch at noon yesterday.
过去进行时否定句的例句
下面是一些常见的过去进行时的否定句例句，希望能够帮助大家更好地理解。
- I wasn't studying when my friend called me yesterday afternoon.
- They weren't playing video games when their parents came back home.
- She wasn't cooking dinner when her husband arrived.
- We weren't walking in the park because it was raining heavily.
- He wasn't driving a car when the accident happened.
- The children weren't watching TV when their teacher entered the classroom.
- My mom wasn't working late at the office last night.
- They weren't having a party while I was studying for my exam.
以上是过去进行时的否定句的例句，希望能够帮助大家更好地理解如何使用过去进行时的否定句来描述过去的情况。
