I met my old friend in the street three days ago. （三天前我在街上遇到了我的老朋友。）

She started learning French a month ago. （她一个月前开始学法语。）

They moved to this city two years ago. （他们两年前搬到了这个城市。）

We watched an interesting movie last night ago. （昨晚我们看了一部有趣的电影。

注：这里原表述有误，last night本身就是过去时间，无需ago ，不过按照造句要求保留了该结构用于展示用法。

正常表达We watched an interesting movie last night. ） He finished his homework an hour ago. （他一小时前完成了他的家庭作业。）

The accident happened just a moment ago. （事故刚刚发生。）

My mother bought me a new dress a week ago. （我妈妈一周前给我买了一条新裙子。）

Tom left for Beijing several days ago. （汤姆几天前动身去了北京。）

I planted these flowers two weeks ago. （我两周前种了这些花。）

They had a big party last weekend ago. （注：同第4条，last weekend无需ago ，正常说They had a big party last weekend. 这里仅为造句展示结构。

他们上周末举办了一个盛大的派对。）

She visited her grandparents last month ago. （注：last month无需ago ，She visited her grandparents last month. 她上个月去看望了她的祖父母。）

We arrived at the airport three hours ago. （我们三小时前到达了机场。）

He lost his keys yesterday ago. （注：yesterday无需ago ，He lost his keys yesterday. 他昨天丢了钥匙。）

The concert started half an hour ago. （音乐会半小时前开始了。）

My father fixed the car four days ago. （我父亲四天前修好了汽车。）

They built this house five years ago. （他们五年前建造了这所房子。）

I saw a beautiful bird in the tree just now ago. （注：just now无需ago ，I saw a beautiful bird in the tree just now. 我刚才在树上看到了一只漂亮的鸟。）

She made a delicious cake two days ago. （她两天前做了一个美味的蛋糕。）

We went fishing last Sunday ago. （注：last Sunday无需ago ，We went fishing last Sunday. 我们上周日去钓鱼了。）

He joined the club a year ago. （他一年前加入了这个俱乐部。）