剥析得很好。读一读这首小诗，感受一下看怎么样？
　　I heard a bird sing
　　
　　
　　I heard a bird sing
　　In the dark of December .
　　A magical thing
　　And sweet to remember .
　　"We are nearer to spring
　　Than we were in September."
　　I heard a bird sing
　　In the dark of December .
　　 Olive Herford