原句: Although the development of science and technology has brought the process to mankind, our surrounding natural environment is greatly destroyed. 改句: The development of science and technology has brought the process to mankind whileour surrounding natural environment is greatly destroyed. 【解析】 原句是一句典型的轉折句，在四六級作文中，"although"和"though“的應用相當廣泛，那么如何使自己與眾不同呢，在此，我為大家推薦一個連詞”while“，這個單詞有很多意思，但在改句中，它的意思是”雖然、盡管“，在考場上用的人相對比較少，所以以后在作文中，如果出現(xiàn)了轉折、對比之類的關系句，記住要想到”while“哦！ 下面大家來試試吧！ Existing employees have made concessions, such as higher retirement ages, but it is near impossible to reduce the payments made to existing pensioners. 答案： While existing employees have made concessions, such as higher retirement ages, it is near impossible to reduce the payments made to existing pensioners.
