11 Past Perfect Progressive Tense 过去完成进行时 Judy had been driving to work before she stopped. 朱迪一直在开着车去上班，直到她把车停了下来。 She had been navigating a dirt road when she heard a strange noise. 她一直行驶在一条土路上，这时她听到了一阵奇怪的噪音。 She halted the car and stepped out. 她停下车，走了出来。 She inspected the car,which had been runnin...