Past Perfect, Present Perfect and Future Perfect

Hi, Guys!,


You can practise these verbal forms doing the following exercises. If you have any question, you can ask me them tomorrow morning. Have a nice weekend!!!


PRESENT PERFECT, PAST PERFECT AND FUTURE PERFECT

A. Read these sentences and say what tenses are used (Pres. Perf., Past S., Past Perf., Fut. Perf.)

1. …since 1990 American financial institutions have lost $ 5,000 million a year…
2. The spokesman revealed that a German student had read…
3. By 2010, computer fraud will have become the world’s…

Which tense is used to:
a. Say that something will happen before a certain time in the future?
b. Talk about a situation that started in the past and continues in the present?
c. That something happened before another action in the past?

B. Complete the sentences with the right perfect tense. Use the verbs in brackets.
1. When Windows 95 appeared, no one ___________ ever ___________ anything like it before. (see)
2. __________ you _____________ about that new operating system WinScape 3000 in this month’s It magazine? (read)
3. All today’s computers _______________ obsolete within just a few years. (become)
4. My printer ____________ down. Can you help me? (break)
5. Mum’s very tired. She _____________ working hard all morning. (be)
6. My mum and dad ________________ a new computer. It’s fantastic! (buy)
7. Before 1990, very few people in Europe ____________________ a computer at home. (use)
8. By 2025, they __________________ totally different kinds of computers. (invent)

C. Use the clues to form sentences with perfect tense verbs (present, past or future).
1. Until he went to India,______________________________________________
2. By the time I finish university, ______________________________________
3. Until the 20th century, nobody ______________________________________
4. For nearly two years, my dad________________________________________
5. Since last summer, I ________________________________________________