According to its grammatical functions, idioms can be classified into five groups. The idiom “heart and soul” belongs to（ ）
A、idioms nominal in nature
B、idioms adjectival in nature
C、idioms verbal in nature
D、idioms adverbial in nature
【正确答案】：D
【题目解析】：习语的分类有五种：名词性习语 (idioms nominal in nature)，如white elephant“无价值的东西”；形容词性习语 (idioms adjectival in nature)，如cut and dried“已成定局的”；动词性习语 (idioms verbal in nature)，如follow one’s nose“凭本能行事”；副词性习语 ( idioms adverbial in nature)，如heart and soul“全心全意”；句式习语 (sentence idioms)，如A bird in the hand is worth two in the bush.“双鸟在林不如一鸟在手”。
