then he smiled,turned to henry and said quietly,"bicycles"...smiled,turned to 分别是什么句子成分,
以上句子结构,turned to henry and said quietly 和前面smiled 是三个并列谓语,其中前面一个逗号,相当于AND 功能
如果用现在分词短语表达的话,那就是做伴随状语了,可以这样改写
Then he smiled,turning to henry and saying quietly "bicycles.（现在分词做伴随状语）