3.Some words have same essence inside,but have different images in people's mind under different cultural background. yellow,a kind of colour 黄，颜色或指不健康 Some idioms reflect the deep cultural ackground,like historical stories,religion and customs.We sometimes easily know he literal meaning,but we still confused what they really want to convey.Like "it's Greek to me.does not refer to the Greek language,but means "I don't know at all". Also,"talk turkey"do not tell you that let's say something about the animal turkey but means "to be frankly3. Some words have same essence inside, but have different images in people’s mind under different cultural background. yellow ,a kind of colour 黄 ,颜色 或指 不健康 4. Some idioms reflect the deep cultural background, like historical stories, religion and customs. We sometimes easily know the literal meaning, but we still confused what they really want to convey. Like “it’s Greek to me. ” does not refer to the Greek language, but means “I don’t know at all”. Also, “talk turkey” do not tell you that let’s say something about the animal turkey but means “to be frankly