A2
S + was / were + V3 + (by + N)
过去时的被动语态
讲解
结构与现在时的被动语态相同，只是 to be 用过去式。讲历史或已完成的事时很常用。 常见陷阱：时态变化加在 to be 上，不加在 V3 上：This house was builded ✗, was built ✓。
例句
This house was built in 1990.
这座房子建于1990年。
The letters were sent yesterday.
那些信是昨天寄出的。
He was invited to the party.
他被邀请参加聚会。
The window was not closed.
窗户没有关。
练习
通过选择题测试你的掌握程度
高效学习“S + was / were + V3 + (by + N)”
语法点“S + was / were + V3 + (by + N)”（过去时的被动语态）是 CEFR 2 级别的重要结构之一。要熟练运用这个结构，你需要弄清楚它的使用语境，并经常练习。
学习小贴士：把例句大声朗读多遍，培养自然的语感反应。然后试着结合自己的生活情境造句。用发音按钮听标准发音并跟着练习。
你也可以查看完整课程“”，更深入地了解相关的语法和词汇。