I. dwell on the numerical features of the nouns: 1. the board of advisers has been discussing the agenda of the next meeting for an hour already. 2. sonata is not played by an orchestra. 3. it was a tragedy that he died before he could enjoy the fruits of all his hard work. 4. the measles is infectious. 5. sea-wasp is poisonous. 6. he bought another pair of scales. 7. the tropics are not pleasant to live in. 8. they produced a number of steels. 9. the machinery was due to arrive in march, 10. she dropped tear after tear but he didn't raise his head. 11. this was more like home. yet the strangeness was unaccountable.
1.I have been studing English since 2006
2. He has been building the house in the village for 2 years
3. They have been reading this book since Friday
4. She has been writing her composition for 2 hours
5. We have been walking to the town since 3 o*clock
6. I have been cooking dinner for my family for half an hour
7. They have been watching a new film for an hour
8. The kitten has been playing with a toy since this morning
9. Ann has been speaking over the telephone for 40 minutes
10. They have been working there since 2008
1. is running - present continuous (PC)
has been running - present perfect Continuous (PPC)
2. are doing - present continuous
are working - present continuous
have been working - present perfect Continuous
3. is - PS (x2)
is playing - PC
have been playing - PPC
4. live - PS
have been living - PPC
5. has been doing - PPC
hasn't done - PP
6. have been waiting - PPC
7. are doing - PC
8. am reading - PC
have been reading - PPC
have read - PP
9. have been doing - PPC
10. is - PS
helps - PS
Has been helping - PPC
have washed - PP
are cooking - PC
11. works - PS
has been working - PPC
12. Have found - PP
am looking - PC
have been looking - PPC
haven't found - PP
13. Have been playing - PPC
Go, do - PS
14. Wake - PS
have been slepping - PPC
15. have been waiting - PPC
haven't received - PP
16. Have received - PP (x2)
17. is - PS
has been shining - PPC
got - past simple
18. wind - PS
19. Come - PS
are doing - PC
have been waiting - PPC
20. are - PS
have put - PP