straightforward [,stret'fɔrwɚd]

adj. 直截了当的;坦率的;明确的; adv. 直截了当地;坦率地;

💡 straight直的+forward 向前 → 正直的,坦率的;

"The instructions are reasonably straightforward."

近义：honest, aboveboard, open, openhearted, outspoken, plainspoken 反义：insincere, liar, lying, misleading, pretended, sham

communication [kə,mjunɪ'keʃən] 词频2 词根: commun

n. 通讯，通信;交流;书信;传达;

💡 com共同+muni交流+cat=cate表动词 + ion表名词 → communicat(e)沟通 + ion表名词 → 通讯；传达；交通

"a classic example of poor communication"

近义：intercommunication, intercourse, telling, broadcasting, advertisement, disclosure

serve [sɝv] 词频1 词根: 服侍

vt.& vi. （为…）服务;任（职）;提供;端上; vt. 招待;（为…）工作;对…有用;向…供应; vi. 适合;服役;供职;[网球、羽毛球]发球; n. 网球等发球;发球权;所发的球;

💡 serv(serve)+e(动词后缀)→服务；供应；伺候；备餐；开球；发球

"Serve with a green salad."

近义：tend, assist, pour, supply, dish, kickoff

useful ['jusfl] 词频1 词根: use

adj. 有用的，有益的，有帮助的;令人满意的;

💡 use用+ful可…的” →有用的

"The memory expansion cards are useful adjuncts to the computer."

近义：helpful, assistive, available, profitable, purposive, serviceable 反义：idle, inane, ineffective, insignificant, lousy, needless

basic ['besɪk] 词频4 词根: 底部

adj. 基本的;[化学]碱性的;[地质学]基性的;首要的; n. 基础，基本;基本原则，基本原理，基本规律;要素;基础训练;

💡 bas=basis基础+ic形容词，...的 →基本的

"The company offers scuba-diving as an add-on to the basic holiday price."

近义：medullary, pivotal, primal, primary, primordial, basal 反义：associate, attache, parallel, auxiliary, accessorial, accessory