I did notice...在用法上和 I noticed ...有什么区别?其他动词同问 比如 I did find

I did notice...中 did 表示 强调,意思是：我确实注意到……
I noticed ...只是表示一般过去时,意思是：我注意到……
I did find 和 I found...也是一样的用法.
I did find 我的确发现……
I found 我发现了……