降低英语过去分词

常用fall [fɔ:l]vi.落下；变成；来临；减弱 n.秋天；瀑布；下降 马到成功!

减少英语：reduce

reduce 读法  英 [rɪˈdjuːs]  美 [rɪˈduːs]

短语：

1、reduce waste 减少浪费

2、reduce by 减少了

示例：

The design of the bicycle has managed to reduce the effects of wind resistance and drag.

这种自行车的设计成功地减少了风的阻力和摩擦力。

词语用法：

1、reduce可用作及物动词,也可用作不及物动词。用作及物动词时接名词或代词作宾语。可用于被动结构。reduce偶尔也可接动词不定式作宾语补足语,意思是“使…不得不…”。

2、reduce后常接介词by表示“以某幅度减少”或“以…方法减少”; reduce常接介词to表示“减少到…”或“使陷入…状态”。

词义辨析：

decrease, reduce区别：

1、decrease 多表示逐渐缩小。如：The swelling decreased daily.(肿胀日渐消退。)

2、reduce 为常用词，使用范围较大，可指尺寸，数量，规模和程度等，也可指地位，经济状况。如：He won’t reduce the rent of the house.(他不愿降低房租。)

v. 减少，缩小，使落魄，简化，还原

减少的意思。

Debase。抵贝思

reduce [ri'dju:s, -'du:s] vt. 减少；降低；使处于；把…分解vi. 减少；缩小；归纳为[ 过去式 reduced 过去分词 reduced 现在分词 reducing ].或：reduce [ri'dju:s; -'du:s]vt.减少；缩小；削减，缩减；精简：They have to reduce expenses this year.他们今年必须削减开支。降低；减轻：She tried to reduce her weight.她设法降低她的体重。将…归纳；简化：We can reduce his speech to three sentences.我们可以把他的讲演归纳成三句话。换算；折合：If you reduce 3 lbs. to ounces, you have 48 ounces.如果将3磅换算成盎司，可得48盎司。使变为：The heavy artillery bombardment reduced the village to ruins.猛烈的炮火使这个村庄变成一片废墟。His words reduced her to silence.他的话使她哑口无言。把…弄碎(或熔化等)；捣碎：Their daily work is to reduce the rocks to dust.他们每天的工作就是将岩石捣碎成粉末。使降级；使降职：He was reduced to ordinary soldier due to a serious dereliction of duty.他因严重失职被降为普通士兵。降服(使有秩序等)；攻陷(城市等)：The teacher soon reduced the noisy class to order.教师很快就使这个乱哄哄的班恢复了秩序。The fortress at the entrance to the village was reduced by a sudden attack.村口的堡垒遭到突然袭击而被攻陷。使处境困难(或悲惨等)；迫使，逼迫[常用被动语态]：The bad harvests in the last few years reduced the peasants to extreme poverty.过去几年的庄稼歉收使农民变得极为贫困。Poverty reduced them to begging for a living.贫困迫使他们乞讨为生。使变弱；使变瘦；使衰退：He is reduced to skin and bones.他变得骨瘦如柴。约束；限制：Business was reduced to local buying and selling when the war broke out and international trading ceased.战争爆发国际贸易停止后，商业就只限于地方性的买卖了。【数学】约简：The last problem is to reduce an equation to its simplest form.最后一道题是将一方程式化简为最简单形式。使…浓缩变稠：The last step is to add some salt and reduce the soup for three minutes.最后一个步骤是加些盐然后使汤浓缩三分钟。(用油)调稀(或冲淡)：We can use this special oil to reduce the thick paint to a liquid thin enough to spread easily .我们可以使用这种特殊的油将浓油漆稀释一下，使它刷起来比较省力。【化学】还原；分解(化合物)：Water can be reduced to oxygen and hydrogen by electrolysis.水通过电解可以分解为氧和氢。【外科学】使…复位(或复原)：A doctor can reduce a fracture or dislocation.医生能使骨折或脱臼复原。【语音学】使(重读元音)弱化：Some English vowel sounds which are not given weight in speech become reduced to a rather formless central vowel.英语中有些元音在讲话时没有重读，结果成了相当不定型的中央元音了。【摄影术】减低(底片的)强度【生理学】使(细胞)发生减数分裂vi.减少；缩小；缩减；减弱(节食)减肥：She has been reducing for the last few weeks.她在最近几周一直在节食减肥。【化学】还原：Ferrous iron reduces to ferric iron.二价铁能还原成三价铁。(液体)浓缩变稠：The soup will reduce by adding some cooking starch.汤中加些淀粉将变稠。(油漆、颜料等)稀释：Most paints reduce with turpentine.许多油漆可用松节油稀释。【生物学】(细胞)减数分裂近义词:decrease变形：vt. reduced . reducing

reduce 英[rɪˈdju:s] 美[rɪˈdu:s] vt. 减少; 缩小; 使还原; 使变弱; vi. 减少; 节食; 蒸发; （液体） 浓缩变稠; [例句]It reduces the risks of heart disease这降低了患心脏病的风险。[其他] 第三人称单数：reduces 现在分词：reducing 过去式：reduced过去分词：reduced