考博英语常见语法3

非谓语动词 A8Fe@$<#8  
动名词、分词、不定式。 u;c W
IRG  
主动或被动。(doing/done, to do /to be done) qIsf!1I?  
发生在谓语动词之前还是之后。(doing/ having done /having been done, to do/to have done /to have been) vO~Tx  
To在什么情况下作介词，什么情况下作不定式引导词。 2b^Fz0 w4  
真题剖析 Bdb}4X rL  
(2000) … In the inner cities of America, newspapers regularly report on newborn babies　60　into garbage bins by drug-addicted mothers. ]7 Sf)  
60. A. dropped　B. to drop　C. dropping　D.drops Y<irNp9  
(2001.3) A heroin addict, for instance, leads a　59　life: his increasing need for heroin in increasing doses prevents him from working, from maintaining relationships, from developing in human ways.　 %]DA4W  
59. A. destructive　 B. dissatisfied　　C. damaged　　 D. derivative