First listen and then answer the question.
Why did the policeman ask the writer to come to the police station?
It must have been about two in the morning when I returned home. I tried to wake up my wife by ringing the doorbell, but she was fast asleep, so I got a ladder from the shed in the garden, put it against the wall, and began climbing towards the bedroom window. I was almost there when a sarcastic voice below said, ‘I don't think the windows need cleaning at this time of the night.’ I looked down and nearly fell off the ladder when I saw a policeman. I immediately regretted answering in the way I did, but I said, ‘I enjoy cleaning windows at night.’
‘So do I,’ answered the policeman in the same tone. ‘Excuse my interrupting you. I hate to interrupt a man when he's busy working, but would you mind coming with me to the station?’
‘Well, I'd prefer to stay here,’ I said. ‘You see, I've forgotten my key.’
‘Your what?’ he called.
‘My key,’ I shouted.
Fortunately, the shouting woke up my wife who opened the window just as the policeman had started to climb towards me.
Notes on the text 课文注释
1 I don't think，当think后接表示否定意思的宾语从句时，通常在主句中使用否定形式，但译成汉语时否定意义仍在宾语从句中。
2 I immediately regretted answering in the way I did，我立刻后悔不该那样回答。在regret后面可接动名词，也可接动词不定式，但表示的意思不一样。接动名词是对已发生的事情表示后悔，而接动词不定式则是对现在要发生的事表示抱歉。
3 So do I，我也是的。这是接前面一句话“I enjoy cleaning windows at night.”当前面一句话的谓语也适用于后一句时，可用so(肯定)或neither(否定)开头，然后接倒装语序。