break down 的用法1. （机器或车辆）出毛病，损坏 出故障；坏掉If a machine or a vehicle breaks down, it stops working.Their car broke down. 他们的车子出故障了。If your car breaks down, just sit tight and wait for the police to come along. 如果你的车子抛锚，就留在原处不动，等警察来。My car broke down and had to be towed to a garage. 我的汽车出故障了，得拉到修理厂去。If the machine is operating after it has run out of oil, it may break down.如果没油还继续运转的话，这个机器会出故障的。We ( Our car) broke down on the motorway. 我们(的汽车 )在高速公路上抛锚了。2. （讨论、关系或系统）失败，破裂，失灵If a discussion, relationship, or system breaks down, it fails because of a problem or disagreement.Talks with business leaders broke down last night. 昨晚与商界领导人的谈判破裂了。Paolas marriage broke down. 葆拉的婚姻破裂了。Negotiations between the two sides have broken down.双方的谈判失败了。3. 感情失控（痛哭起来）If someone breaks down, they lose control of themselves and start crying. The young woman broke down in tears. 这名年轻妇人痛哭流涕。He broke down and wept when he heard the news. 他听到这个消息时不禁痛哭起来。4. （身体，健康）被搞垮；垮掉He finally broke down under the four hours pressure. 在四小时的压力下他终于支持不了If he continues in this way, he will break down sooner or later. 如果他这样继续下去，迟早会垮的Her health broke down under the pressure of work. 工作的压力把她的身体弄垮了。5. 分解；将分成若干部分To break down something such as an idea or statement means to divide it into smaller parts in order to make it easier to understand or deal withThe question can be broken down into two parts.这个问题可以分为两个部分。These rules tell us how a sentence is broken down into phrases.这些规则告诉我们一个句子是怎样分解成若干短语的。breakdown n.Our car had a breakdown on the road.我们的汽车在路上拋锚了Unless he stops driving himself like this, hell have a breakdown. 他要是总这样拚命干下去是吃不消的。I am suffering a nervous breakdown.我深受神经衰弱的苦。Shes just recovering from a nervous breakdown.她正在从精神崩溃中恢复.Researchers found that marriage breakdown can have a significant effect on appearance.研究人员发现，婚姻破裂会对人的外貌造成很大的影响。Family breakdown can lead to behavioral problems in children.家庭破裂会导致孩子的行为出问题。高考链接：1. （2012 陕西） He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system _.A. broke in B. broke up C. broke out D. broke down 2. (2005 湖北)To understand the grammar of the sentence, you must break it _ into parts.A. down B. up C. off D. out