Unit 2How to open a savings account？
非谓语动词作宾语补足语
宾语补足语是位于宾语之后，说明宾语状态、特征成份，多由名词、形容词、副词、不定式，动名词和分词充当。
宾语+宾语补足语=复合宾语
如: The sun keeps us warm.    I heard him singing.    You must get your hair cut.    We call her Jenny.    They found him out.    Make yourself at home.    They wish you to go with them.
    复合宾语结构此结构由主语+及物谓语动词+宾语+宾语补足语组成。宾语与宾语补足语有逻辑主谓关系，若无宾语补足语，则句意不完整。