为什么come true主语为物

come true和achieve的区别：中文意思不同、用法不同、强调重点不同。

come true作为不及物动词词组，含义为成真、实现、不变种地发芽生长，主语通常为物；achieve作为及物动词，含义为完成、达到，主语通常指人。

一、come true的含义及用法come true作为不及物动词词组，意为成真;实现;(预言等)成事实;(作物)不变种地发芽生长。例句：Winning the medal was like a dream come true. 获得这枚奖牌好比梦想成真。If I win, it will be a dream come true. 如果我赢了，那就是梦想成真。Owning a place of their own is a dream come true for the couple. 这对夫妇拥有了自己的房子，终于梦想成真了。His wish to visit China has at last come true. 他要访华的愿望终于实现了。Our wish for better times has come true. 我们要求过好日子的愿望已实现。Sometimes you may think your dream will not come true. 有时你可能认为你的梦想不会实现。Never giving up is the key to our dreams come true. 永不放弃是我们梦想成真的关键。

二、achieve的含义及用法achieve作为及物动词，意为实现;完成;(凭长期努力)达到(某目标、地位、标准);成功。例句：All you've achieved is to upset my parents.你唯一做到的就是使我的父母难过。Their background gives them little chance of achieving at school.他们的家庭背景使他们很难有机会在学校学有所成。There are many who will work hard to achieve these goals...有志之士将会共同为实现这些目标而努力。You can only achieve success through hard work. 你得孜孜不倦方能成功。The medicine did not achieve the desired effect. 这种药未达到预期效果。Nothing of any substance was achieved in the meeting. 会议没有取得任何实质性成果。The release of the hostages could not be achieved without the use of force. 不使用武力不可能使人质获释