I saw the doctor three days ago.

我三天前看了医生。

He called me three days ago.

大前天他给我打了电话。

I watched a movie three days ago.

我大前天去看了电影。

I bought a new book three days ago.

大前天我买了一本新书。

I met an old friend three days ago.

大前天我见到了一个老朋友。

We took a walk in the park three days ago.

我们大前天在公园里散步。

She lost it about three days ago.

她大概三天前丢的。

Three days ago, the light in our living room suddenly went out.

三天前，我们客厅的灯突然熄灭了。

We deep fried fish three days ago in the kitchen, but the unpleasant smell stays.

三天前我们在厨房炸了鱼，但难闻的味道一直没有消失。

M: We deep fried fish three days ago in the kitchen, but the unpleasant smell stays.

三天前我们在厨房炸了鱼，但难闻的味道一直没有消失。