built on the sand
讲解：这个习语的字面意思就是“建立在沙土上”，我们知道沙土是很软的，不能支撑人或重的物体，因此引申为“不切实际”或“基础不牢”。
支持范例：
Eg.I'm not surprised to learn that this company is in debt-he has very little experience of business, and the whole organization was built on sand.
听到他公司亏空负债，我一点也不感到意外—他对商业不内行，整个体制的基础都不牢固。
英语情景对话：
A: They got a divorce at last.
他们最终还是离婚了。
B: It’s inevitable. Their love was built on the sand, and this is why their marriage has landed on the rocks.
这是不可避免的，他们的爱情缺乏坚实的基础，这就是他们是婚姻频临破裂的原因所在。
A: You said it. Love built on the sand will soon be on the rocks.
你说得对，缺乏坚实基础的爱情很快就会出现裂缝。
B: That gives us a good lesson.
这给予我们一个很好的教训。
英语学习笔记：
1.get a divorce：离婚
Eg.Now that I've got my divorce I feel as free as a bird.
由于我已经离婚，我觉得自由自在了。
Eg.You never told me you got a divorce because of a dead tree.
你从未提过你离婚是因为那棵死树。
Eg.The couple got a divorce because they could not get along.
那对夫妇离婚了，因为他们相处不好。
Eg.She got a divorce from him last year.
她去年和他离了婚。
2.at last:最后
Eg.He was pleased that at last he was extricated.
他很高兴他终于获得了解脱。
Eg.After a long dispute, he at last made a concession to me.
经过长时间的争论，他终于对我让步。
Eg.His wish to visit China has at last come true.
他要访华的愿望终于实现了。
Eg.At last his plan came off.
他的计划最终还是成功了。
3.on the rocks
释义1：(婚姻)濒于破裂的
Eg.Their marriage has been on the rocks for a couple of months.
他们的婚姻触礁好几个月了，已经濒于破裂。
释义2：身无分文的，手头拮据的
Eg.Financially, you are on the rocks then?
那么你的经济状况是不是很拮据呢？
Eg.By the time I've paid all the bills I owe I shall be on the rocks.
等我付完了所有的欠账,我就身无分文了。
释义3：遭难的，遭殃的；破产的
Eg.Did she has a hunch that my business is going on the rocks?
她是不是预感到我的生意要垮台？
Eg.The Company is on the rocks now and quite some employees are thinking of moving to other firms.
公司现在不看好，许多职员都在想着跳槽。
释义4：（饮料）加冰的
Eg.She liked Beam on the rocks.
她喜欢喝加小冰块的比姆酒。
3.give sb a good lesson：给予某人一个很好的教训
Eg. If you have it in for the girl, I'll give you a good lesson.
如果你对这位姑娘使坏的话，我就会好好教训你。
4.You said it. 你说得对。
