第 91 课: 使用更多的动词：参加，戴，看等-1

We are in a bike race. 我们在参加自行车比赛

We were in a bike race. 我们刚才参加了自行车比赛

I have a hat on my head. 我戴着帽子

I had a hat on my head. 我刚才戴着帽子

I am reading. 我在看书

I was reading. 我刚才在看书

I am fishing. 我在钓鱼

I was fishing. 我刚才在钓鱼