These days I hear many words about the parts of human body.Such as the head,the arm and so on.And I also learn some organs of the human being.In order to do well in the study.I take out the three books I ever bought before.There are many pictures in it match which there is some English and Chinese words.This is the way called Understanding Input,I think.I can learn the words more deeply and I can remember them firmly.It is very good way to learn English.