do的過去式是什麼

do的過去式是did，是用於一般過去時的助動詞，過去分詞爲done。它的意思是做；幹；學習；研究。

例句：

1、He did not belong to his set of friends.他與他那夥朋友不一樣。

2、The journalist did not want to reveal the identity of his informant.那個新聞工作者不想透露消息提供人的身分。

3、What he did went beyond the bounds of law.他的所作所爲已超出了法律允許的範圍。