3. BLUE:来源：考试大

    (16)He is proud of his blue blood. 他因出身名门贵族而骄傲。

    (17)Things are looking extremely blue. 情况极其不妙。

    (18)True blue will never stain. 真金不怕火炼。来源：考试大

    (19)She ran and ran until she was blue in the face. 她跑啊跑啊，累得脸色发青精疲力竭。

    (20)lt's once in a blue moon that you get a chance like that. 你得到的是个千载难逢的机会。来源：考试大

    (21)He can read like a blue streak. 他看书极快。来源：考试大

    (22)The bad news came like a bolt out of the blue. 这消息来得如青天霹雳。

    (23)John arrived out of the blue. 约翰突然来了。来源：考试大

    (24)A rainy day always gives me the blues. 下雨天总是使我心情抑郁。

    4. BROWN:来源：考试大

    (25)The leaves browned slowly. 树叶渐渐枯了。

    (26)We are all of us done brown. 我们都上当了。来源：考试大

    (27)When she gives a dinner party,she always does it up brown.她举行宴会，总是办得很出色。

    (28)l'm browned off,sitting here all day with nothing to do. 我整 天坐在这儿没事干，感到抑郁无聊。

    (29)Aim at one bird, don't blaze into the brown. 瞄准一只打，不要射击鸟群。来源：考试大

    (30)l tried to attract his attention,but he was in a brown study. 我 企图吸引他的注意力，可是他仍在沉思默想。

    5. BLACK:来源：考试大

    (31)The black dog is over him. 他意气消沉。

    (32)Tom is the black sheep of his family. 汤姆是个败家子。来源：考试大

    (33)Next time l see him, l'll give him a black eye. 下次我见到他一定打他一顿。