brave: indicates lack of fear in alarming or difficult circumstances: a ~ kitten hissing at the much bigger dog.      （alarm惊恐、警报is the fear and anxiety that someone feels when something dangerous or unpleasant might happen表示危险将要发生时，人们感觉到的畏惧焦虑，如'what have you done?' Ellie cried in alarm你都干了些什么？埃利惊恐地喊道，还表示警报如a burglar/fire/smoke alarm防盗 /防火/烟火警报器）


courageous: implies temperamental stoutheartedness and readiness to meet dangers and difficulties: ~ stance before the unruly crowd.


unafraid: indicates simple lack of fright or fear: face the future ~.


fearless: may indicate lack of fear or, more positively, undismayed resolution: took a ~ stance against powerful opponents.      不屈不挠的决心


intrepid: suggests daring in meeting danger or fortitude in enduring it: ~ pioneers struggling westward.


valiant: implies resolute courage and fortitude whether in facing danger or attaining some end: her ~ efforts to perfect her technique.


valorous: suggests illustrious accomplishments: the ~ deeds of King Arthur’s knights.        （illustrious卓越光辉stresses enduring and merited honor and glory attached to a deed or person强调难以磨灭的荣耀光荣，如the illustrious deeds of national heroes民族英雄的光辉业绩）


dauntless: emphasizes determination, resolution and fearlessness: held their ~ position to the end.        (drf三个词都表决心)


brave: 泛指不害怕， courageous性格上的勇敢(temperament气质, 指出身或培养形成的性格)，unafraid: 仅表示单纯的不害怕，fearless: 不害怕并且有不屈不挠的决心，intrepid: 勇敢面对危险有坚忍毅力，valiant: 面对危险艰巨任务(attain巨大努力)有坚定的勇气和毅力，valorous: 表示取得了光辉成就，dauntless: 强调决心(drf三个词都表决心)


记忆方法: 1）首字母BCUFIVVD重组CBD VIV FU在中央商务区生活(VIV是拉丁词根表示to live，FU是活的谐音) <==需要勇敢             "敢"表示"有胆量，勇于进取"，右边的"又"表示手，左边是倒写的"豕"字表示野猪，合起来表示猎杀野猪时 1、有胆量有勇气，如敢爱敢恨敢死敢说敢为敢做敢当勇敢果敢  2、谦辞，表示自己的行为冒昧，如敢问两兄名姓敢问路在何方              "勇"从力甬声。<说文解字>:"勇，气也"。本义是1、"使人充满力量的志气"，其异形字为"恿"，表示勇由心生，如勇气勇力勇于 2、胆大敢于，如英勇勇士勇夫勇功有勇无谋   3、凶猛，如神勇骁勇   4、清代临时招募的武装人员，如乡勇游勇。  可见，勇和敢意思相近，更强调"心力力气"

         2）练习一下

         3）勇敢的意思是面对危险困难和未知事物时不害怕mean having or showing no fear when faced with something dangerous, difficult, or unknown.首字母BCUFIVVD重组为CBD VIV FU在中央商务区生活(VIV是拉丁词根表示to live，FU是活的谐音) <==需要勇敢