1.句子分析
I had seen her expression when she opened the door 这是一个主从复合句.在这个主从复合句中,主句是I had seen her expression；时间状语从句是when she opened the door.
her forced smile 前面省略掉了I had seen; as 相当于when.那么,这句话写完整就是I had seen her forced smile when she curveyed him from head to toe.也是一个主从复合句,同上.checking her judgement of him against that already given to her by Auntie Suyuan 是一个现在分词短语,在句中做状语,表示伴随动作.
2.全句翻译
当她打开门的时侯,我看到了她的面部表情.她脸上堆着勉强的笑容,从头到脚上上下下打量着他,检验着自己已经从苏媛姑姑那儿听说过但又不信的对他的判断.