四、六级难句攻关(54)

翻译：美国尚未实现其目标,即防止塔利班重新控制阿富汗,向基地组织恐怖分子提供安全庇护,以从那里密谋袭击美国。解析：本句的主干是The American goal has not beena chieved．两个破折号间的动词不定式做定语，修饰goal。

1.The American goal-to prevent the Taliban from regaining control of Afghanistan and providing al-Qaeda terrorists safe harbor from which to plot attacks against the U.S.-has not been achieved.（USA Today,Mar.13,2012）