say.是原形，用于一般现在时态的第一，二人称
sαid是过去式，有“说过”“据说”的意思
如:
She always says that practice makes perfect.
The manager says this project is important.
We said goodbye before we left.
Sorry， I couldn’t hear what you said.
①say、强调说话内容包括观点、感受、想法
1、过去式：said
过去分词：said
2、say to sb.对某人说
例如：What did you say to him?你对他说了什么
3、say+句子
例如：He said (that)he wanted to go.他说他想要去。
②
1、It's said 据说是 它的说 有人说
2、It's said that 据说
3、It's easier said than done 说的比做的简单 说的比做的简略 这说起来容易做起来难 它的说比做容易得多
4、but it's life said he 这就是生活