C 1.当我打开电视的时候，我意识到我最喜欢的节目已经结束了 When I turned on the TV, I realized that my favorite program had already been over.
2. 当我出门的时候，校车已经离开了. When I left home, the school bus had already gone.
3. 当我上学的时候，老师已经开始上课了. When I went to school, the teacher had already started his class.
4. 当我到电影院的时候, 我发现我忘带带电影票了. When I arrived at the cinema, I found that I had forgotten to take the ticket.
5. 当我离开学校的时候，其他学生都到家了. When I left school, other students had already been at hom.
6. 当我到学校的时候，铃已经响了. When I arrived at school, the bell had already ringed.
7.我到家时她已经睡了。 When I arrived home, she had already been in bed.
8.到上学期末为止我们已经学了两千多个英语单词了。 By the end of last term, we had learned over 2,000 English words.
9.在我上大学之前我已e69da5e887aa7a64364经工作了两年。 Before I entered the college, I had worked for two years.
10.我们到电影院时,电影已经开始五分钟了。 When we arrived at the cinema, the film had been shown for five minutes. 或者：When we arrived at the cinema, the film had been started five minutes ago.
11.我们发现有人把我们的窗户打破了。 We found that someone had broken our window.
12.我没有去看电影，因为我已看过了。 I didn't go to see the film because I had already seen it.
13.我没有去，因为我已看过这部电影。 I didn't go to the cinema because I had already seen the movie.
14.他查看了所有的信息后，相信女儿的选择是对的。 After he had checked all the information, he believed that his daughter was right.