我在做SC的过程中常对having done和having been done的用法掌握不清,造成了一些麻烦。我一直都没有找到对这两种结构使用方法的较好的解释。前几天做完了《PREP破解版语法注释分析》,又总结了一遍。从这300多道有GMAC官方答案的真题当中,我对以上两个结构——having done和having been done——的用法得出了一些体会,现总结于此。 水平有限,肯定有些不妥之处,恳请牛人批评指正!我们来一起完善这一语法点的解释,为大家扫清一个疑点。 一、必错 1.having done和having been done都不是动名词结构,因此不能充当名词成分! 所以SC中,如果这两个结构做主语、宾语等,必错! 2.having done和having been done做后置定语,必错! having done做后置定语,一般都要改成相应的定语从句 having been done做后置定语,一般都要改成相应的done做过去分词,或者改成定语从句 3.having done和having been done用于“with独立主格”中必错! 指with+sb/sth+having done/having been done这种情况 二、可用但一定要慎用 做状语 having done和having been done都可以做伴随状语,并不是必错。但一定要注意,句子中明确地有“现在完成时”这种意思时,才可以这么用,否则基本都错。 这里举PREP中的两个正确的例子。 1.Having finally reached a tentative labor agreement with its company's pilots, the airline's board of directors must now determine how the airline can both increase profits and compete more effectively for customers than it did in the past. 2.Some patients who do not respond to therapies for depression may simply have received inadequate treatment, having, for example, been prescribed a drug at a dosage too low to be effective or having been taken off a drug too soon. 个人认为第二个例子尤其需要特殊记忆。 好了,目前就总结出这些。欢迎大家指正,补充! 另外,真的要感谢编写《PREP破解版语法注释分析》的前辈们,这份材料真的是太及时、太方便了!
[此贴子已经被作者于2007-12-6 19:32:25编辑过] |