Question

【题目】There are some dangerous fishes in this river, and I’ve warned Jack here.

A. not to swim B. to not swim

C. swim not to D. to swim not

Answer 1

【答案】A

【解析】

试题分析：句意为：这条小河里有一些危险的鱼，我曾经告诫杰克不要在这里游泳。warn sb to do sth表示告诫某人做某事，其否定应表达为：warn sb not to do sth，即告诫某人不要做某事。结合选项可知应选A。