2.to stop or hold back someone阻止:

prevent sb./ sth. (from) doing sth [= stop sb../ sth. (from) doing sth; keep sb./sth. from doing sth.] 阻止某人做某事; 阻止某事发

[注]keep sb./sth. doing sth. 使某人.某物处于某种状态

price [prais] n. 1.an amount of money for which a thing is offered, sold, or bought价格; 价钱 ;

2.very非常

[辨析] 1.pretty, beautiful, handsome, lovely: 均有 美 的意思, 通常指的重点不同, 各用于不同的对象. beautiful 表示 :美丽时, 是最普遍的用法, 通常指最能产生美感的那种美, 给以人最大的满足, 是高尚的精神上的美丽, 包含喜悦感的温柔, 愉快, 爱怜, 优美等. 可以用于人, 一般用于女性, 亦可用于物, 如: face, body, flower, view, voice, poem, smell, morning, weather, music 等;　 pretty通常形容小孩, 青年女子, 或比较细小的东西, 含有娇小, 悦人, 精致的美的特色, 它不用于精神上的美或高尚的美, 形容物时有 娇小玲珑的意思;　 handsome 一般指男性美, 有 英俊, 潇洒的意思; 形容女性时, 通常指 五官端正, 有男人气质;　 lovely通常指能引起赞美赞叹等感情的人或物, 也可以形容或描写女人的容貌;　 beautiful, pretty, lovely 都不用于形容男子的美, 形容男子时, 一般用　 handsome, good-looking等.　 2.fairly, rather, quite, pretty, very: 这几个表示程度的副词从强到弱的顺序是very rather/pretty quite fairly. 用法上的区别在于: ①只有rather一词能和比较级及too连用, 但有quite better(完全康复); ②quite 和rather都可用在冠词前, 也可和动词连用, pretty, very, fairly 则不能; ③quite, fairly rather, very 可放在a./an后, 但只有当名词前有形容词时, 才这样用. ④只有quite一词能和一些没有程度差异的词(如: perfect, impossible, dead, wrong等)连用, 表示completely(完全地) 或absolutely(绝对的)的意思.

prevent [prI5vent] v. 1.to keep something from happening or existing 防止; 预防

2.a gift礼物

[辨析]gift,　 present:　 两者都可作 礼物解, 常可能通用, 但gift 着重于诚意与分量, 一般指上级或同级所赠的礼物, 侧重于送礼人的诚意;　 present一般指同级或下级所赠的礼物, 口语中用得多.

president [prezId[nt] n. the head of government in many modern states that do not have a king or queen 总统

press [pres] v. to push firmly and steadily against something 压按

pretend [prI5tend] v. to make oneself appear (to be sth., to be doing sth.), either in play or to deceive others假装; 装作:

pretend (to be) + n. /adj. 假装;

pretend to do sth　 假装做某事;

pretend to be doing sth假装正在做某事;

pretend that-从句:　 假装

pretty [5prItI] adj. (of a woman, a child, or a small fine thing) pleasing or nice to look at, listen to, etc; charming but not beautiful or grand漂亮的; 迷人的; 可爱的; 俊俏的

[同] beautiful

adv. 1.in some degree; rather; quite though not completely相当; 颇

2.existing or in course of action now现在的

n. 1.the time now passing现在;

at present现在; 目前

2.of great value that must be not wasted宝贵的　 3.greatly loved or very valuable as being dear to one珍爱的

prefer [prI5f[:] v. (preferred; preferring) to choose (one thing or action) rather than another; like better宁可；宁愿；更喜欢;

prefer doing sth./to do sth宁愿做某事;

prefer (doing) to (doing)匼 宁愿而不愿......;

prefer to do than do匼 宁愿而不愿;

prefer sb. to do sth.宁愿某人做某事

prepare [prI5pZ[] v. to get or make ready准备; 预备: 　prepare for(= get ready for)为作准备 　prepare匼for匼使有准备; 为准备; 　be prepared for匼准备(有某种情况);　 be prepared to do准备; 打算; prepare to do匼准备做　　 preparation [9prep[5reiF[n] n. the act or state of preparing准备:　 make　 preparations for 为作准备

present [5preznt] adj. 1.(of a person) being in the place talked of or understood 在场的;　 出席的　　 [反]absent

2.glory; worship崇拜

precious [5preF[s] adj. 1.of great value and beauty 珍贵的

3.to do (an action) repeatedly or do exercises regularly in order to gain skill 练习；实习

practise /practice doing sth练习做

praise [preiz] v. to speak favourable and with admiration of赞扬；表扬

praise sb. for (doing) sth因某事表扬某人

n. 1.expression of admiration赞扬； 表扬

in praise of称赞；歌颂

sing high praise for 高度赞扬

2.to (force oneself to) show or use (some necessary quality in behaviour) 实施

2.experience; knowledge of a skill 经验；实习　 3.regularly repeated performance or exercise in order to gain skill 练习：

Practice makes perfect.熟能生巧

put into practice实行; 实施

[辨析]practice, drill, exercise:　 均作名词,表示 练习.

practice指为求得完善, 熟练而反复地做某事;

drill指在老师(尤指军队中的教官)的监督下进行的严格、反复的练

exercise尤指为以展智力或体力而设计的练习。

practise [5prAktIs] v. (=practice 美) 1.to act in accordance with (the ideas of ones religion or other firm belief)实行； 实践

4.taught by actual experience or practice, not by studying books 有实际经验的

practice [5prAktIs] n. 1.actual use or performance as compared with the idea, intention, rules, etc., on which the action is based 实行；实践