通常大家说一个人好幻想空想，常常说是做白日梦，英语表达的有：
build castle in the air 、daydream(s)、reverie 、pipe-dream
、 fantasy
如：
He is building castle in the air.他正在做白日梦。
这个例句摘自《新英汉词典》新版p69，湖南教育出版社2017.3第一版，总感觉少了一个不定冠词a,
He is building a castle in the air.
请各位大神讨论。
His plan is not realistic. Maybe he's only building a castle in the air.
他的计划不太现实，也许他只不过是在做白日梦。
I have been building castles in the air with you.
我一直和你一起做白日梦。
He drifted off into another daydream.
他飘飘然又做了一个白日梦。
The idea for the story came to him in a daydream
这个故事的念头是他做白日梦的时候突然想到的。
He escaped into daydreams of beautiful women.
他躲进白日梦中幻想美女。
Do you work hard for success rather than daydream about it?
你是否付出艰苦努力以取得成功，而不是只在那里做白日梦？
Often they gave themselves up to daydreams of escape.
他们常沉溺进这种逃避现实的白日梦。
He daydreams of being a famous journalist
他幻想着自己成为著名记者。
I am inclined to daydream.
我喜欢空想。（我喜欢做白日梦。）
She stared out of the window, lost in a daydream.
她凝视窗外，沉浸在幻想之中。
This is an unrealistic dream for a young boy like you.
你年纪轻轻,不要老做白日梦。
He wanted to be rich but it was an impossible dream.
他想发财，然而这只是不可能实现的梦想。
Ruth is a visionary girl; she spends her time daydreaming.
露丝是个好幻想的女孩,她常把时间消磨于做白日梦。
Don’t sit there daydreaming!别做白日梦了！
Bill was sitting and daydreaming so his mother told him to come down to earth and to do his homework.
比尔坐着空想，他母亲要他面对现实，去做课外作业。
Stop daydreaming and be realistic.
别空想了，还是从实际出发吧。
Stop living in a fantasy world .
别再生活在幻想世界中了。
Isn't that daydreaming?
岂非白日做梦？
You could waste your whole life on a pipe-dream.
白日梦会荒废你一生。
“When I talk about gold medals, I’m not talking about a pipe dream, or thinking that they’re going to fall from the sky. These are athletes who have made the marks to achieve it,”
说到金牌，我可不是在做白日梦或者认为它们是从天而降的。我们那些已经取得佳绩的运动员会把它变成现。
The announcer's voice brought Holden out of his reverie. [ˈrevəri]
播音员的声音将霍尔登从幻想中惊醒。
She was jolted out of her reverie as the door opened.
门一开就把她从幻想中惊醒。
The song took me into a reverie of the grasslands.
歌声把我带入对草原的冥想。
Enough of fantasy, the workaday world awaited him.
天马行空地幻想了一番之后，等待他的是平淡无奇的现实世界。
They live in fantasy worlds which make Euro Disney seem uninventive
他们生活在幻想的世界里，相形之下连欧洲迪士尼乐园都显得毫无创意。
She invents fantasy lives for her own vicarious pleasure
她幻想过着各种奇妙的生活，从想入非非中获得乐趣。
Falling in love the first time is all froth and fantasy. [ˈfæntəsi]
初恋完全是一场虚幻的美梦。
I'll be your dream, I'll be your wish I'll be your fantasy.
我将是你的梦想，我将是你的愿望，我将是你的幻想。
