Đáp án:

1-I was a student 2 years ago

2. -He was a doctor two years ago.

3-They were farmers last year.

4-Lan and Ba were nurses last year.

5-It wasn't cold yesterday.

6-She wasn't a pupil last week.

7-This hat wasn't new yesterday.

8-My parents weren't teachers two years ago.

9-He wasn't a mechanic last Monday.

10-Was he an engineer yesterday?

No, he wasn't

11-Was It hot last week?

12-The windows were open last Monday.

13-Were you a teacher two years ago?

Yes, I was

14-Where was Nam from yesterday?

15-Why was he unhappy last Tuesday?

Gỉai thích:

Cấu trúc thì quá khứ đơn (với động từ là tobe: 

Khẳng định: S+was/were+O

Phủ định: S+wasn't/weren't+O

Nghi vấn: Was/ were+ S + O?

Thì quá khứ đơn được dùng khi có các dấu hiệu:

last+thời gian trong quá khứ

khi có từ yesterday

thời gian+ ago

HỌC TỐT NHA!

Cấu trúc thì quá khứ đơn với tobe

` ( + ) ` : S + was / were + ...

` - ` Chủ ngữ là I / he / she / it + was + ...

` - ` Chủ ngữ là you / we / they + were + ....

` ( - ) ` : S + was / were + not + ... 

` - ` Chủ ngữ là I / he / she / it + was + not + ...

` - ` Chủ ngữ là you / we / they + were + not +  ....

` ( ? ) `  : Were / Was + S + .... ?

`- `  Was + He / she / it + ... ?

` - `  Were + you / we / they + ... ? 

` + `  Các dấu hiệu nhận biết thường gặp :
` + ` 2 years ago , in the past , last year , last night , ...

` 1 `  : was 

` 2 `  : was

` 3 `  : were

` 4 `  : were

` 5 `  : wasn't ( was not )

` 6 `  : was not

` 7 `  : wasn't

` 8 `  : weren't

` 9 `  : wasn't

` 10 `  : Was

` 11 `  : Was

` 12 `  : were

` 13 `  : Were - was

` 14 `  : was

` 15 ` : was