There are two ways to add new meanings to a word,extend its original meaning or give it a new unrelated meaning.For the former,second language learners could easily to memory the word meaning.For example,if a learner knows the word “owl”,it is naturally for him or her to understand the meaning of “owl” when it is used to be described a person.Owl is a nocturnal animal.To say a man is an owl man means that the man likes to work or play at night instead of sleeping.There is a similar expression in Chinese.Chinese people (alys) describe that kind of people as“夜猫子(yemaozi) (cat in;night)”.