问题
选择题
The patient was warned ________ oily food after the operation.
A．to eat not
B．eating not
C．not to eat
D．not eating
答案
答案：C
本题考查非谓语动词。warn sb. (not) to do sth.意思是“警告某人（不）要干某事”，其被动结构是be warned not to do sth。句意：“病人被警告手术后不要吃油腻的食物”。