Answer the following questions. Your answers should be clear and short.By the criterion of grammatical functions, idioms may be classified into five groups. Name the five groups and match the following expressions with them as their examples respectively.
“white elephant” “look into” “beyond the pale”
“tooth and nail” “Never do things by halves. ”
【正确答案】：
IDIOMS NOMINAL IN NATURE, E.G. WHITE ELEPHANT.
IDIOMS ADJECTIVAL IN NATURE, E.G. BEYOND THE PALE.
IDIOMS VERBAL IN NATURE, E.G. LOOK INTO.
IDIOMS ADVERBIAL IN NATURE, E.G. TOOTH AND NAIL.
SENTENCE IDIOMS, E.G. NEVER DO THINGS BY HALVES.
【题目解析】：名词性习语：白象形容词性习语：在…范围之外（出格）动词性习语：调查；观察副词性习语：竭尽全力句子习语：做事要有始有终；做事不要半途而废。
