which of the product xxxxxxx ,in case of xxxxx

这句子哪的，出现不少次了

意思是：超市里面，一般的促销手段都是鼓励大家买很多东西，然后就会导致浪费

.... 简单来说，这句话就是：
the product used sales promotions

mark

原文是这样的Of the produce that does appear in the supermarket, commonly used sales promotions frequently encourage customers to purchase excessive quantities which, in the case of perishable foodstuffs, inevitably generates wastage in the home

不提语法，TMD很多人愤恨语法了。
【1】Sales promotions/ encourage customers/ to purchase excessive quantities/ which 【2】inevitably generates wastage in the home.
简单吧，excessive与wastage呼应，挺好。
能写出这样的含糊句子就不错了。有语境配合的话，还是 make senses!
可作者更讲究【逻辑严谨】：
1 插入【2】= [,in case of perishable foodstuffs,] 把论题限于易腐败的食品原料，
这样，逻辑严谨多了。为什么插在这？
2 插入【1】= [Of the product that appear in the supermarket,].
注意啊，有个逗号，是全句修饰：给出一种情景(背景)。。。。让你想象。

Produce is fruit and vegetables that are grown in large quantities to be sold. 农产品
product 显然是有人想改错 结果反而自己错了。

主语promotion，谓语generate，宾语wastage，就懂了。

暖

顶

改变一下语序，这个句子就好理解了
commonly-used sales promotions frequently encourage customers to purchase excessive quantitiesOf the produce that does appear in the supermarket, which, in the case of perishable foodstuffs, inevitably generates wastage in the home。

of表范围后面that从句是定语从句，整体作状语成分。
commonly used定语修饰sales promotions整体作主语。
encourage sb to do。
which引导非限制性定语从句，实际上是which inevitablely generate wastage in the home。
incaseof大概就是插入部分不大具有具体成分意义吧。。。