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1·The builders have finished the roof.

建筑工人们已经完成了屋顶的建造。《柯林斯英汉双解大词典》

2·It feels good to have finished a piece of work.

完成一项工作让人感觉很好。《柯林斯英汉双解大词典》

3·I'm so glad that I have finished nearly half of the test now.

我很高兴，我现在已经完成了将近一半的考试。

4·They have finished the task that nature has given them.

它们已经完成了大自然交给它们的任务。

5·Today, only three countries have finished spacewalks independently.

今天，只有三个国家独立完成了太空行走。

6·Ideally you should keep a tooth brush in your pocket and use it immediately after you have finished eating.

理想情况下，你应该在口袋里放一把牙刷，吃完后立即使用。

7·I should have finished the book by Friday.

到星期五我应该能读完那本书。《牛津词典》

8·I should have finished by the middle of the week.

我在这周过半的时候应该就能完成。《牛津词典》

9·The three men seemed to have finished loading the truck.

这3个人好像已经装好了那辆卡车。《柯林斯英汉双解大词典》

10·I have finished my homework. Let's go for a walk.

我已经做完作业了。我们去散步吧。