1.Tom began playing the piano 4 years ago.
=> Tom has been playing the piano for 4 years.
2. I started cooking for the party 4 hours ago.
=> I have been cooking for the party for 4 hours.
3. She started working as a secretary 2 years ago.
=> She has been working as a secretary for 2 years.
4. My father is reading a newspaper. He started 2 hours ago.
=> My father has been reading a newspaper for 2 hours.
5.My sister began to study English a year ago.
=> My sister has been studying English for 1 year.
6.Scientists began to fight against AIDS in 1980.
=> Scientists have been fighting against AIDS since 1980.
7.The Browns have been living in London for 20 years.
=> The Browns began to living in London 20 years ago.
8. John has worked for this electronics firm since 1999.
=> John started working for this electronics firm in 1999.
9. Women have been fighting for their rights since the middle of the 20thcentury.
=> Women began to fight for their rights in the middle of the 20th century.
10. Jack and Jill have learned to drive for 2 weeks.
=> Jack and Jill started learning to drive 2 weeks ago.
11. How long have you studied English?
=> When did you started studying English?
12. When did you begin to do research on lung cancer?
=> How long have you begun to do research on lung cancer?

Rewrite the following sentences, using the words given.

1. Tom has been playing the piano for 4 years.
2. I have been cooking for the party for 4 hours.
3. She has been working as a secretary for 2 years.
4. My father has been reading a newspaper for 2 hours.

5. My sister has been studying English for 1 year.
6. Scientists have been fighting against AIDS since 1980.
7. The Browns began to living in London 20 years ago.
8. John started working for this electronics firm in 1999.
9. Women began to fight for their rights in the middle of the 20th century.
10. Jack and Jill started learning to drive 2 weeks ago.
11.  When did you started studying English?
12.  How long have you begun to do research on lung cancer?

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