persuade的用法

两个意思一样，“说服某人做某事 persuade sb.to do sth (to后接动词原形)
persuade sb. into doing sth
例： I persuaded him to give up smoking
I persuaded him into giving up smoking

没有区别，意思一样，只是宾语后面的宾补形式不一样。
persuade sb.to do sth. 动词不定式做宾补
persuade sb. into doing sth 介词结构做宾补

没有区别persuade sb. to do sth. = persuade sb. into doing sth

它们的意思没有太大的区别，只是into是介词，所以必虚用ing形式，这只是在用法上有区别。