Поставьте предложения в отрицательную и вопросительную формы. заранее большое ) 1. the laboratory assistant always fixes the devices himself. 2. they work in an industrial enterprise. 3. they speak english fluently. 4. they often make a lot of experiments. 5. the students begin their studies in october. 6. we change the temperature of gas in our experiment. 7. they often stay at work after 6 o’clock. 8. i always discuss different problems with my colleagues. 9. i spend my holiday in the seaside. 10. the students of our institute often go to the industrial exhibitions. 11. the engineers examine devices. 12. you attend all the lectures. 13. he always attends practical classes. 14. she wants to work in an oil company. 15. it often rains in this part of russia. 16. he likes to read scientific articles. 17. he often takes part in scientific conferences. 18. the students of our university do researches in the field of mathematics. 19. the professor of our university delivers interesting lectures to the students. 20. they like to publish articles in foreign scientific journals.

1. The laboratory assistant doesn’t always fix the devices himself. 2. They don’t work in an industrial enterprise. 3. They don’t speak English fluently. 4. They don’t often make a lot of experiments. 5. The students don’t begin their studies in October. 6. We don’t change the temperature of gas in our experiment. 7. They don’t often stay at work after 6 o’clock. 8. I don’t always discuss different problems with my colleagues. 9. I don’t spend my holiday in the seaside. 10. The students of our Institute don’t often go to the industrial exhibitions. 11. The engineers don’t examine devices. 12. You don’t attend all the lectures. 13. He doesn’t always attend practical classes. 14. She doesn’t want to work in an oil company. 15. It doesn’t often rain in this part of Russia. 16. He doesn’t like to read scientific articles. 17. He doesn’t often take part in scientific conferences. 18. The students of our University don’t do researches in the field of mathematics. 19. The Professor of our University doesn’t deliver interesting lectures to the students. 20. They don’t like to publish articles in foreign scientific journals.

1. Does the laboratory assistant always fix the devices himself?2. Do they work in an industrial enterprise? 3. Do they speak English fluently? 4. Do they often make a lot of experiments?. 5. Do the students begin their studies in October?
6. Do we change the temperature of gas in our experiment?7. Do they often stay at work after 6 o’clock?8. Do you always discuss different problems with your colleagues? 9. Do you spend your holiday in the seaside? 10. Do the students of our Institute often go to the industrial exhibitions?11. Do the engineers examine devices?12. Do you attend all the lectures?13. Does he always attend practical classes?14.Does she want to work in an oil company? 15. Does it often rain in this part of Russia?16. Does he like to read scientific articles?17. Does he often take part in scientific conferences?18. Do the students of our University do researches in the field of mathematics? 19. Does the Professor of our University deliver interesting lectures to the students?20. Do they like to publish articles in foreign scientific journals?

1. had better 2. i have to 3. must 4. might 5. could. 1.brenda can't be over 30. 2. what should i do? 3. you don't have to come with me 4. anyone could break into his house 5. he mustn't be long. might, might not, must, mustn’t, can’t or can. 1.  we’re not sure but we go to prague for christmas this year.2.  bill cooked the lunch, so you __can, expect anything special! 3. you really _   start spending more time on your work.4.  that’s really stupid idea! you   _mustn't__be serious, surely! 5.  you __can' realize it, but this is very important to me.6. tell mike he take my book if he needs it. rewrite each sentence so that it contains  can’t, might, must, should or needn’t1.  david must have taken  your books by mistake2.  you needn't have parked   outside the police station.3.    liz can't have  met harry before.4. you needn't have  cleaned the floor. 5.  heather can't has  left yet.6.   they can't have eaten all the food7.    jack must have arrived half an hour ago8.    pam and tom can't  come.9.    the cat might have taken  the fish from the table! 10  it must have been  a waste of time worrying, after all!correct any errors in these sentences. some sentences are correct.1) she could 2) you shouldn't have been 3) couldn't manage 4) it could be 5) correct we 't have so much. the cat   __possibly did not open the fridge.  helen __could__ give  us a lift the last person   might have left   the door unlocked we   didn't have to wear  school uniform at my school.                         the   end

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