1. If he should go to Qing Hua University， he would make full use of his time.

　　2. If he were to come here， he would tell us about it.

　　3. If he were free， he would help us.

　　4. If he studied at this school， he would know you well.

　　5. If I had seen the film， I would have told you about it.

　　6. If I had got there earlier， I would have met Mr. Li.

　　參考答案

　　1、如果他要上清華大學的話，他就會充分利用他的時間了。

　　2、如果他要來的話，他會通知我們一聲。

　　3、要是他有空的話，它會幫助我們的。

　　4、如果他在這所學校學習的話，它會對你很熟悉。

　　5、我如果看過這場電影，我會把電影內容告訴你了。

　　6、如果我早點到那兒，我就會會到了李先生。

　　長難句翻譯：

　　1. The American economic system is organized around a basically private-enterprise， market-oriented economy in which consumers largely determine what shall be produced by spending their money in the marketplace for those goods and services that they want most.

　　2. Thus， in the American economic system it is the demand of individual consumers， coupled with the desire of businessmen to maximize profits and the desire of individuals to maximize their incomes that together determine what shall be produced and how resources are used to produce it.

　　3. If， on the other hand， producing more of a commodity results in reducing its cost， this will tend to increase the supply offered by seller-producers， which in turn will lower the price and permit more consumers to buy the product.

　　參考答案：

　　1. 參考譯文：美國的經濟是以基本的私有企業和市場導向經濟為架構的，在這種經濟中，消費者很大程度上通過在市場上為那些他們最想要的貨品和服務付費來決定什么應該被制造出來。

　　2. 參考譯文：因此，在美國的經濟體系中，個體消費者的需求與商人試圖最大化其利潤的欲望和個人想最大化其收入效用的欲望相結合，一起決定了什么應該被制造，以及資源如何被用來制造它們。

　　3. 參考譯文：另一方面，如果大量制造某種商品導致其成本下降，那么這就有可能增加賣方和制造商能提供的供給，而這也就會反過來降低價格并允許更多的消費者購買產品。