表示過去發(fā)生的動作或事件， 常和表示過去的時間狀語連用，如yesterday, last night, the day before yesterday, 3 days ago,

　　　　含有be動詞的句子， 將動詞變?yōu)檫^去式，am, is的過去式為was，are的過去式為were

　　　　I was at the butcher’s.

　　　　You were a student a year ago.

　　　　The teacher was very beautiful ten years ago.

　　　　★變疑問句將be動詞移動到句首

　　　　Were you at the butcher’s?

　　　　Were you a student a year ago?

　　　　Was the teacher very beautiful ten years ago?

　　　　★變否定句在be動詞后面加not

　　　　I was not at the butcher’s.

　　　　You were not a student a year ago.

　　　　The teacher was not very beautiful ten years ago.

　　　　★肯定回答否定回答

　　　　Yes, I was. No, I was not.

　　　　Yes, you were. No, you were not.

　　　　Yes, he/she was. No, he/she was not.

　　　　★特殊疑問句：

　　　　What did you do?

　　　　(必背)

　　　　不含有be動詞的句子，將動詞變?yōu)檫^去式

　　　　I finished my homework yesterday.

　　　　The boy went to a restaurant.

　　　　The Sawyers lived at King Street a year ago.

　　　　★變疑問句在句首加did， 動詞變?yōu)樵��?/p>

　　　　Did you finish your homework yesterday?

　　　　Did the boy go to a restaurant?

　　　　Did the Sawyers live at King Street a year ago?

　　　　★變否定句在主語和動詞之間加did not

　　　　I did not finish my homework yesterday.

　　　　The boy did not go to a restaurant.

　　　　The Sawyers did not live at King Street a year ago.

　　　　★肯定回答及否定回答

　　　　Yes, I did. No, I didn’t.

　　　　Yes, he did. No, he didn’t.

　　　　Yes, they did. No, they did not.