I remember when my previous dog ran away. The dog ran quickly in pursuit of a cat. When I looked under the porch, I detected a snake. We saw a deer emerging from a half devoured bush.
1. I remember having a previous math lesson last week. 2. The dog ran quickly in pursuit of the burglar. 3. When I looked under the porch I detected a smell of rotten leaves. 4. We saw a deer and fawn emerge from the woods on our ride home.