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前缀:ad- 【词根含义】:来,临近;朝,向,趋向;加强意义 【词根来源】:来源于拉丁语前缀ad-。 【同源单词】:adapt, adaptable, adaptation, adaptive, addict 前缀:ab-, ac-, ad-, af-, ag-, an-, ap-, ar-, as-, at- 等加在同辅音字母的词根前, 表示"一再"等加强意义accompany 陪伴(ac+company伙伴→陪伴) accelerate 加速(ac+celer速度→一再增加速度) accentuate 强制(ac+cent唱歌→一再唱出→强调) accumulate 积累(ac+cumul堆积+ate→堆积起来→积累) accustom 使习惯(ac+custom习俗→习惯习俗) addict 上瘾,入迷(ad+dict说→一再说起→对……入迷) additive 上瘾的(addict的形容词) adduce 引证,举例(ad+duce引导→一再引导→举例说明) affable 亲切的(af+fable说话→不断可以说话→亲切) afford 买得起(af+ford拿出→一再拿出{钱}→买得起) affirm 肯定(af+firm坚定→肯定) aggression 侵略,进攻(ag+gress走+ion→一再往前走→进攻) aggrandize 扩大(ag+grand大→一再大→扩大[权力]等) aggravate 恶化(ag+grav重+ate病加重) announce 通告(an+nounce通知→通告) appal 使震惊(ap+pal白色→[脸]变白→受惊) applause 鼓掌(ap+pease赞扬→一再赞扬→鼓掌) appreciate 欣赏(ap+reci价值+ate→一再给价→欣赏) appoint 指定,任命(ap+point指→指定) arrange 安排(ar+range排列→安排) arrest 逮捕,阻止(ar+rest休息→不让动→逮捕) arrive 到达(ar+rive河→到达河边→达到目标) assault 进攻(as+saul跳→跳起来→进攻) assiduous 勤奋的(as+sid坐+uous→一再坐着[学习] →勤奋) assist 帮助(as+sist站→站过来→帮助) associate 联合,结合(as+soci社团+ate→结成团队→联合) assimilate 吸收;同化(as+simil相同+ate→成为相同→同化) assure 肯定;确信(as+sure确定→一不再确定→肯定) attach 附上;依恋(at+tach接角→接触上→附上) attain 达到;获得(at+tain拿住→获得) attend (at+tend关心→关心到了→出度) attract 吸引(拉→拉过来→吸引) attest 证实(at+test试验→一再试验→证实) 前缀:ad- 加在在单词或词根前, 表示"做…, 加强…"adapt 适应(ad+apt能力→有适应能力) adept 熟练的(ad+ept能力→有做事能力→熟练的) adopt 收养;采纳(ad+opt选择→选出来→采纳) adhere 坚持(ad+here粘→粘在一起→坚持) adjacent 邻近的(ad+jacent躺→躺在一起→邻近的) adjoin 贴近;毗连(ad+join参加→参加在一起→贴近) administrate 管理;执行(ad+ministr部长+ate→做部长→管理) admire 羡慕(ad+mire惊奇→惊喜;羡慕) adumbrate 预示(ad+umbr影子+ate→[将来的]影子出现→预示) adjust 调整(ad+just+正确→弄正确→调整) adventure 冒险(ad+venture冒险) admonish 告诫,警告(ad+mon警告+ish→一再警告) advent 来临,来到(ad+vent来→来到) 前缀:ad- 含有at, to之意, 或表示加强意义adjust 调整 admixture 混杂 adventure 冒险 adjunction 添加,附加 admonition 告诚,劝告 adjoin 峨连,相接,贴近 词根词缀:ad-【来源及含义】Latin: prefix; to, toward, a direction toward, addition to, near, at; and changes to: ac-, af-, ag-, al-, an-, ap-, aq-, ar-, as-, at- when ad- is combined with certain words that begin with the letters c, f, g, l, n, p, q, r, s, and t 【相关描述】The form ad- appears in this form before a vowel and before the consonants d, h, j, m, and v. It is simplified to a- before sc, sp and st. Before c, f, g, l, n, p, q, r, s, and t; ad- is changed to ac-, af-, ag-, al-, an-, ap-, aq-, ar-, as-, and at-. In other words, the d of ad usually changes into the same letter as the first letter of the following root or word when it is a consonant: ad-fix becomes affix, and ad-sign becomes assign; therefore, making a double consonant. Another example includes: attract as with ad-tract (drawn towards); so it has a double t. On the other hand when ad- precedes a vowel, as with adapt, it is simply ad-apt, with one d. For the same reason, there is only one d in adore and adumbrate, because ad- has combined with orare and umbra each of which starts with a vowel. So, remember: since these Latin words begin with vowels and not consonants, the d of ad does not double as shown in the previous examples. 【同源单词】a capite ad calcem, Ab ovo usque ad mala, Ab uno ad omnes, Abiit ad majores, abjure, accede |
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