do現(xiàn)在時(shí)，did過去時(shí)，done過去完成時(shí)，現(xiàn)在的語境就用do，只要是過去的語境就用did，完成時(shí)態(tài)用done。比較好分辨的，看句子中的時(shí)間詞就行了。did常用于一般過去時(shí)態(tài)中，做助動(dòng)詞或?qū)嵙x動(dòng)詞。

在英語中，Do、Did 、Does的主要區(qū)別是人稱、時(shí)態(tài)的不同。以下舉例說明：

1、Do 用于第一人稱單復(fù)數(shù)、第二人稱單復(fù)數(shù)和第三人稱復(fù)數(shù)或可作為第三人稱復(fù)數(shù)的名詞（稱謂）的一般現(xiàn)在時(shí)的提問。

“you”根據(jù)上下文有單數(shù)“你”和 復(fù)數(shù)“你們”兩種情況：

單數(shù)“你”，回答用“I”：

Do you like to speak English? 回答：Yes,I do. or No,I donot.

復(fù)數(shù)“你們”，回答用“we”：

Do you like to speak English? 回答：Yes,we do. or No,we donot

第三人稱復(fù)數(shù)：

Do they like to speak English? Yes,they do. or No,they donot.

可作為第三人稱復(fù)數(shù)的名詞（稱謂）：

Do your brothers like to speak English?

Yes,they do. or No,they donot.

2、Does用于第三人稱單數(shù)或可作為第三人稱單數(shù)的名詞（稱謂)的一般現(xiàn)在時(shí)的提問,其后的動(dòng)詞只能用原形，回答只有兩種-男性/女性肯定用 Yes,he/she does,否定用No,he/she doesnot。

Does he/she get up early?Yes,he/she does. or No,he/she doesnot.

Does Mary get up early?

Does your brother walk to school?

3、Did 用語一般過去時(shí)的提問，不分人稱、單復(fù)數(shù), 后面的動(dòng)詞使用原形，注意回答和提問人稱的對(duì)應(yīng)一致

Did you speak English yesterday?

Yes,I did. or No,I didnot.

Did your brothers like to speak English last year?

Yes,they did. or No,they didnot.

If that can do you a favour, I would be very happy.

Best wishes to you!