1、We had been talking about yon when you came in.
我们正说你呢，你就进来了。
2、At last he got the offer from the university he had been expecting
他终于收到了期盼已久的大学录取通知书。
3、Our team had been practicing many times before we finished.
我们的团队练习了很多次才完成的。
4、They had only been waiting for the bus a few minutes when it came.
他们只等了一会儿车就来了。
5、Up to that time he had been translating those books．
直到那时他一直在翻译这些书。
6、He had been thinking about his marriage．（没有时间状语）
他一直在对他的婚姻思考。
7、She had been suffering from bad cold when she took the exam.
她在考试之前一直患重感冒。
8、(1) I had been doing my homework for 3 hours.
(2) I was doing my homework at 10o'clock.
