特別含義：

　　1、尚未完成：

　　He had been writing the novel．（他沒(méi)有完成它）

　　2、企圖：

　　He had been studying the meaning of this proverb．（他一直在努力學(xué)習(xí)它）

　　3、未得結(jié)果：

　　We had been studying what our enemy had said．（但我們不能理解）

　　4、最近情況：

　　He had been quarrelling with his wife．（近來(lái)）

　　5、情緒：

　　What had he been doing？（不耐煩）