vt. & vi.改变 change the shape, appearance, quality or nature of

　～ current　改变电流
　～ deserts　改造沙漠
　～ one's world　改造世界观
　～ completely　面目一新
　～ magically　魔术般地改变
　～ miraculously　奇迹般地改造
　～ from a backward agricultural country into an advanced industrial country　从落后的农业国转变为先进的工业国
　～ current from one voltage to another　把电流从一种电压变换成另一种电压
　～ sb from an opponent into an ally　化敌为友
　～ into　使转变成
　～ deserts into fertile lands　把沙漠变成良田
　～ dried land into irrigated fields　变旱地为灌溉田
　～ heat into energy　使热变成能
　～ heat into power　把热量转变成动力
　～ mechanical energy into electricity　把机械能转换成电能
　～ to　使转变成

　Marriage has completely transformed her.　结婚使她完全改变了。
　The five years that he spent on the ship transformed him. 　5年的船上生活使他大为变样。
　A little paint will soon transform this old car.　油漆一下，这辆旧车马上就会旧貌变新颜。
　A smile transformed his face.　微笑使他的脸变了样。
　They wanted to transform his world outlook.　他们想改造他的世界观。
　The situation has been transformed a lot.　形势已经大为改观。

 ♣ transform into　(v.+prep.)
　把…转变成…　change (sth/sb) into (sth/sb) by changing the shape or appearance
　A tadpole transforms into a frog.　蝌蚪会变成青蛙。
　They have transformed themselves into permanent city-dwellers.　他们已成为永久的城市居民。
　The magician transformed the man into a rabbit.　魔术师把那个人变成了兔子。
　A dynamo transforms mechanical energy into electricity.　发电机将机械能变为电能。
　The caterpillar was transformed into a butterfly.　毛毛虫变成了蝴蝶。
　An area of sandy pasture land can be transformed into a barren landscape in two or three years.　两三年内这片沙质牧场就可能会变为荒地。

 ♣ transform, reform, remould
　参见reform条。
 ♣ transform, convert, metamorphose, transfigure, transmogrify, transmute
　这组词都可表示“使变为另一物或具有另一种形式”。其区别在于：transform可指外部形式或外表的变化，也可指性格、功能的根本变化；convert指在种类、性格、结构上的轻微变化，强调变化的重点在细节或品质上，变化的目的在于适应新的功能或用途；metamorphose强调变化的超自然性或神奇性，也可指某些动物的结构或习惯方面的根本变化，还可指由化学或物理成分引起的变化；transfigure强调对外表变化地美化或拔高；transmogrify指令人惊奇地、奇异地、甚至十分荒谬地、彻底地变化；transmute强调根本地变化，常指由低级向高级变化。