“I walked” is simple past tense. But “I have walked” and “I had walked” combine a form of “have” with the past participle “walked” to convey time and duration. The grammar ...

We use the past simple when an action or situation happens and finishes in the past. We usually say or know when it happened. She called me at the office yesterday. I worked in London in 2010.

cause and effect Reported speech Active and passive voice Learn how to talk about past events using the past simple and past continuous.

We use the past simple for something that happened and finished in the past. We use it when we say or know the time when something happened. It is often used in stories, when one thing happened ...