1. (-) They didn't go to Nha Trang last month.  

(?) Did they go to Nha Trang last month?

2. (-) He didn't play table tennis with his father.  

(?) Did he play table tennis with his father?

3. (-) Lan didn't see you in the park last week.  

(?) Did Lan see you in the park last week?

4. (-) We weren't in the countryside last summer.  

(?) Were we in the countryside last summer?

5. (-) Mrs. Robinson didn't buy a poster.  

(?) Did Mrs. Robinson buy a poster?

6. (-) Liz didn't enjoy her vacation in Da Lat last year.  

(?) Did Liz enjoy her vacation in Da Lat last year?

7. (-) Her aunt didn't give her a new skirt.  

(?) Did her aunt give her a new skirt?

8. (-) He wasn't in our class two hours ago.  

(?) Was he in our class two hours ago?

9. (-) They didn't watch a good football match on TV last night.  

(?)Did they watch a good football match on TV last night?

10. (-) Peter didn't send that letter to Marry yesterday morning.  

(?) Did Peter send that letter to Marry yesterday morning?

---------------------------

Thì quá khứ đơn : 

`@` Động từ thường :

Câu khẳng định: S + V-ed/2

Câu phủ định: S + did not (didn't) + V (động từ nguyên mẫu)

Câu nghi vấn: Did + S + V (động từ nguyên mẫu)?

`@` Tobe : 

Câu khẳng định: S + was/were +N/adj

Câu phủ định: S + was/were not (wasn't/weren't) +N/adj

Câu nghi vấn:Was/Were + S +N/adj?

`@` Dấu hiệu nhận biết :

- Thời điểm cụ thể trong quá khứ:  yesterday, last week, two days ago, in 1990, last year,....

- Diễn tả các hành động hoặc trạng thái đã xảy ra và kết thúc trong quá khứ.

$#Lúa$

`-------------`

`1.`

`-)` They didn't go to Nha Trang last month.  

`?)` Did they go to Nha Trang last month?

`2.`

`-)` He didn't play table tennis with his father.  

`?)` Did he play table tennis with his father?

`3.`

`-)` Lan didn't see you in the park last week.  

`?)` Did Lan see you in the park last week?

`4.`

`-)` We weren't in the countryside last summer.  

`?)` Were we in the countryside last summer?

`5.`

`-)` Mrs. Robinson didn't buy a poster.  

`?)` Did Mrs. Robinson buy a poster?

`-------------`

`@` Giaỉ thích:

`@` Qúa Khứ Đơn:

`->` Dạng tobe:

+) S + was/ were +…

-) S + was/ were + not

?) Was/ Were + S +…?

`_`  Yes, S + was/ were.

`_` No, S + was/ were + not

`->` Dạng V (thường)

+) S + V2/ed + .....

-) S + did not + V (nguyên thể) + ....

?) Did + S + V infinitive

`_` Yes, S + did.

`_` No, S + didn't.