'No', I answered confidently.

　　'Would you mind unlocking this suitcase please?'

　　'Not at all,' I answered.

　　The Officer went through the case with great care.

　　7. Would you mind unlocking this suitcase please?

　　“请打开这只手提箱好吗?”

　　unlock

　　vt.开锁; 开启; 揭开; 表露;

　　vi.解开; 被释放;

　　[例句]Education and training is the key that will unlock our nation's potential.

　　教育和培训是发掘我们国家潜力的关键。

　　语言点:句子机构分析:mind doing sth.经常用在疑问句或否定句中，表示“介意做某事”。Unlocking this suitcase是动名词短语，作mind的宾语。

　　8. Not at all,I answered.

　　“好的。”我回答说。

　　语言点:not at all的意思是“一点也不”。

　　9. The Officer went through the case with great care.

　　那位官员十分仔细地把箱子检查了一遍。

　　语言点:句子结构分析:本句中的go through表示“检查”。With great care作go through的方式状语。