Trả lời:

- The hard drive might be in a rubbish dump or in someone's house.

- The value has increased to $7.5 million.

- He did but he can not find where it is.

2. Look at the examples of the past perfect highlighted in the text in exercise 1. Find all the other examples. Complete rule a in the Learn this! box. (Nhìn vào các ví dụ về quá khứ hoàn thành được đánh dấu trong văn bản ở bài tập 1. Tìm tất cả các ví dụ khác. Hoàn thành quy tắc a trong phần Learn this!)

Trả lời:

1 had;              2 hadn't

3. Read rules b and c in the Learn this! box. Explain the difference in meaning between the sentences below. (Đọc các quy tắc b và c trong phần Learn this! Giải thích sự khác biệt về nghĩa giữa các câu dưới đây.)

1 When he threw away the computer, Howells forgot about the bitcoins.

2 When he threw away the computer, Howells had forgotten about the bitcoins.

Trả lời:

1 Howells "threw away the computer" then "forget the bitcoins".

2 Howells "forgot the bitcoins" before "threw away the computer". 

4. Complete the sentences. Use the past perfect form of the verbs in brackets. (Hoàn thành các câu. Sử dụng dạng quá khứ hoàn thành của động từ trong ngoặc.)

1 After I __________(leave) the newsagent's, I realised l _________(forget) to buy a paper.

2 When I got to the shopping centre, most of the shops _________ already _________ . (close)

3 We didn't have any bread because l ___________(not go) to the baker's.

4 My sister wasn't there when l got home because she __________ (go) to the cinema.

Trả lời:

1 After I ___had left___(leave) the newsagent's, I realised l __had forgot__(forget) to buy a paper.

2 When I got to the shopping centre, most of the shops ___had___ already __closed__ . (close)

3 We didn't have any bread because l __hadn't gone__(not go) to the baker's.

4 My sister wasn't there when l got home because she __had gone__ (go) to the cinema.

5. USE OF ENGLISH Rewrite each pair of sentences as one sentence, using after. (SỬ DỤNG TIẾNG ANH. Viết lại từng cặp câu thành một câu, sử dụng sau.)

Trả lời:

1 I bought a lottery ticket. Then I went home.

=> After l'd bought a lottery ticket, | werrt home.

2 Iwent to the cosmetics store. Then I went to the hairdresser's.

=> After I had gone to the hairdresser's, I went to the cosmetics store.

3 l paid for the flowers. Then I left the shop.

=> After I had left the shop, I paid for the flowers.

4 Jim did some shopping. Then he caught the bus home.

=> Jim did some shopping after he had caught the bus home. 

6. Complete the text with the phrases below. Use the past perfect. (Hoàn thành văn bản với các cụm từ bên dưới. Sử dụng quá khứ hoàn hảo.) 

buy his ticket                     not check the numbers

lose                                   lost his ticket

with the lottery                   take the lottery company

When Martyn Tott learned that he (1) _________, he was, of course, deliphted. He (2) ________ months earlier at his local newsagents. He (3)_________ at the time, but he knew he was the winner because he always chose the same six numbers. But there was a problem. He (4) _________! Martyn Totts computer records proved that he was the winner, but the lottery company refused to pay him without a ticket. Two years later, he was almost penniless. He (5) __________ to, court, but (6) _________ the battle. He said he wished he had never played the lottery!

Trả lời:

When Martyn Tott learned that he (1) ___had won the lottery___, he was, of course, deliphted. He (2) __had bought his ticket__ months earlier at his local newsagents. He (3)__hadn't checked the numbers__ at the time, but he knew he was the winner because he always chose the same six numbers. But there was a problem. He (4) __had lost his ticket__! Martyn Totts computer records proved that he was the winner, but the lottery company refused to pay him without a ticket. Two years later, he was almost penniless. He (5) ___had taken the lottery company__to court, but (6) __lost__ the battle. He said he wished he had never played the lottery!

7. SPEAKING Work in pairs. Discuss the explanations for the situation or event using the past perfect. What had happened? (NÓI. Làm việc theo cặp. Thảo luận về những lời giải thích cho tình huống hoặc sự kiện sử dụng thì quá khứ hoàn thành. Chuyện gì đã xảy ra?)

1 The car drove onto the pavement and hit a lamp post.

2 A cleaner found a wallet under the seats in the cinema.

3 The boy opened the envelope, read the letter and started to dance around.

Trả lời:

1 The car drove onto the pavement and hit a lamp post.

=> Before the car hit a lamp post, it had driven onto the pavement.

2 A cleaner found a wallet under the seats in the cinema.

=> Before a cleaner cleaned the cinema, she had found a wallet under the seats.

3 The boy opened the envelope, read the letter and started to dance around.

=> After the boy had opened the envelope, he read the letter and started to dance around.