Hello, everyone:

I know we can say:

I lost the hat which I had bought.

I lost the contact lenses I had bought the day before.

But I'm wondering if we can say "I lost the hat which I bought." and "I lost the contact lenses I bought the day before."

Please give me your opinions, thanks!!!

Yes. The sequence of events is still easy to see.

yes, I think so. I think the past perfect is never required if the sequence of events if understandable from the context.Emotion: smile
Teachers: We supply a list of EFL job vacancies
I think both are all right.
Site Hint: Check out our list of pronunciation videos.
Thank you!