今天我们将继续学习含有be动词的一般过去时的特殊疑问句,今天我们将使用的特殊疑问词有how long(多久)、who(谁)以及what(什么)。请试着回答以下几个问题:How long was your last trip?(你上一次旅行玩了多久)Who was your best friend in primary school?(谁是你小学时最好的朋友)How long was your first class in university?(你大学里第一节课上了多久)Who was your favorite singer ...