I did decide 和 I decided 有什么区别请问I did decide 和 I decided 什么区别还有I dont have to do和I havent to do 的区别stop+verbing和stop to + inf.的区别

I did decide 和 I decided 有什么区别请问I did decide 和 I decided 什么区别还有I dont have to do和I havent to do 的区别stop+verbing和stop to + inf.的区别
I did decide 和 I decided 有什么区别
请问I did decide 和 I decided 什么区别
还有I dont have to do和I havent to do 的区别
stop+verbing和stop to + inf.的区别

I did decide 和 I decided 有什么区别请问I did decide 和 I decided 什么区别还有I dont have to do和I havent to do 的区别stop+verbing和stop to + inf.的区别
I did decide表示我在过去的确做了,强调的确
I decided 表示我在过去做了
stop+verbing是停止正在做的事,stop to + inf.是停下来去在做另一件事
至于dont have to do与I havent to do ,这两个用法没什么差别,都表示我没有必要做某事
朋友,希望能帮到你

前两组的区别是前者表动作，后者表状态。第三组中stop+v-ing表示停止正在做的某事， stop to do则是停下来(正做的)去做另一件事(do后面跟的是要做的事)。

I did decide应该表示强调 （do+V 表示强调）
I don't have to do 和I haven't to do 应该没什么区别，前面是美式表达，后面是英式表达
stop+doing指停止正在做的事情；stop to do是指停下手头在做的事情去做另一件事情（to后面那件事）

请问I did decide 和 I decided 什么区别
区别在于I did decide的语气要比较重 还有比较口语化