1、i have been reading a book these days.这几天我一直在看一本书。
2、we have been working hard these days.这些天来，我们一直在努力工作。
3、they have been building a bridge.他们一直在造一座桥。
4、amy has been playing her radio all morning.艾米整个上午一直开着她的收音机。
5、she lost her book.她丢失了她的书。
6、she didn't go to bed until she had finished her work.她直到把工作做完之后才睡觉。
7、how long have you been working in this library?你在这家图书馆工作多久了？
8、hardly had i reached the school when the bell rang.我一到学校，铃就响了。
9、i have been reading the novel.我一直在看这部小说。
10、i’ve n*r ridden a horse.我从来没有骑过马。