IELTS閱讀關鍵詞：表轉折

　　but， however， yet， in fact， on the other hand；

　　A， but B： 否定A而肯定B，則A，B兩部分內容是相反的。

　　例如：Computerized data storage and electronic mail were to have heralded the paper less office. But， contrary to expectations， paper consumption throughout the world shows no sign of abating .

　　解釋：paper less 表示負向，則but后no sign of abating 表示正向，所以abating是表示負向的詞。

　　總結：此種方法有利于在不認識單詞的前提下讀懂句子意思，很有幫助，但一定要練習，而且要敏感。

　　練習：The marginal costs of generating electricity from nuclear energy may be tiny， but ， as the technology now stands， huge and uncertain costs are involved in building the power stations， dealing with spent fuel， and decommissioning.