问题: 语法题
If ( ),the wound in your arm may become infected.
A.left untreated B.leaving untreated
C.leaving untreating D.left untreating
解答:
If (A ),the wound in your arm may become infected.
A.left untreated B.leaving untreated
C.leaving untreating D.left untreating
if+过去分词视为条件从句的省略句,就是if it is left untreated,untreatd:过去分词作补足语.
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