SAT作文素材是用来支持正反方观点的，所以说在SAT作文中最关键的就是选择什么样的作文素材更能够说明问题，也就是说你应该用什么例子来证明自己的论点会更加言之有物。这就是你的构思。

　　Thesis:A seemingly success cause bad consequence.

　　Subject:The Roaring Twenties

　　Detail:

　　The Roaring Twenties wew a decade charaterized by a seemingly strong economy.”The nation was nearer to the final triumph over poverty than ever before in the history of any land.”as President Hoover stated,However,overproduction and underconsumption contributed to the desperate condition of farmers and unsound stock practice meant that the price of securities had risen far beyond the value benhind them which together lauched America into the Great Depression,a time of high unemployment and prevalent pessimism dominated the country.The fragile economy that masked with a widespread optimism turened the country into a purgatory.