2011英语六级备考常考语法精练精讲（47）
2011英语六级备考常考语法精练精讲语法改错练习
必做：
1.He was so foolish to leaving his car unlocked.
2.Commercial banks make most of their income from interest earn on loans and investment in stocks and bonds.
选做★：He would become irritated if he watched the mail to pile up on his table every day.
答案
1.【解析】应该将to leaving改为as to leave。该题考察固定结构so…as to do的意义与用法，该短语含义为“如此…以至于…”
2.【解析】应该将earn改为earned。该题考察过去分词充当定语。根据句意应对interest进行修饰限制，因为earn与interest是被动关系，所以这里应用过去分词。
选做★：【解析】应该将to去掉。该题考察不带to的不定式表达。Watch为感官动词，宾语补足语可为：不带to的不定式(短语)表动作全过程;现在分词或分词短语表动作的一部分;过去分词(短语)表被动。Pile up意为“堆积，累计”，本题并非强调有人故意地堆积，所以用原形。
(编辑：薛琳)
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