1. Susan had been studying Spanish

1. Susan had been studying Spanish for 3 years before she started to learn English.
2. He had been running until he was out of breath.
3. They had been watching TV for two hours before Mike came.
4. Diana had been playing tennis for half an hour when it began to rain.
5. I had been writing letters before lunch.
6. At 10 o'clock Kate had been playing the piano for two hour. (She began at 8 o'clock and at 10 o'clock she was still playing.)

結果 (中文) 1:

1.苏珊学西班牙语了 3 年前她开始学英语了。2.他曾一直运行，直到他喘不过气。3.他们看电视有两个小时之前迈克来了。4.戴安娜网球半个小时，当它开始下雨。5.我在午饭前已经写了信。6.在 10 上午凯特了一直在弹钢琴两个小时。（她开始在 8 上午和 10 上午她扮演）。

結果 (中文) 2:

1.苏珊一直在研究西班牙的前3年，她开始学习英语。
2。他一直跑，直到他上气不接下气。
3。他们一直在看电视两个小时迈克到来之前。
4。戴安娜已经打网球了半个多小时，当它开始下雨了。
5。我一直在写午饭前的字母。
6。上午10时许凯特已经弹钢琴了两个小时。（她开始在8点和10点，她还在玩。）

結果 (中文) 3:

1。在她开始学英语之前，苏珊已经学了3年西班牙语了。2。他一直在跑，直到他喘不上气为止。三.他们一直在迈克看了两个小时的电视了。4。戴安娜打网球已经打了半个小时了，开始下雨了。5。午饭前我一直在写信。6。到了十点，凯特已经弹了两个小时的钢琴了。（她八点开始，十点她还在玩。）