一道高中英语语法题?求助

问题描述:

一道高中英语语法题?求助
问题…it is reported that several people were attacked by some wild monkeys .therefore notices have been placed at various location,( )the public not to feed wild monkeys .答案是reminding ,我选择的是to remind.为什么不能用to remind作目的状语?求解释,谢谢!

用to remind作目的状语话,应该写为:therefore notices have been placed at various location to remind the public not to feed wild monkeys .就是说不定式前面没有逗号的;而本题用了现在分词短语的reminding the public not to feed wild monkeys做伴随状语,前面要有逗号和其他部分隔开.