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Topic 3. Tenses of an English verb (Active / Passive voice)

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  10. C) Find English equivalents for the following phrases.
  11. C) Make up situations in which you can use the tenses mentioned above. Ask other students to explain their use.
  12. Change from Active into Passive.

Ex. 15 Open the brackets using Active / Passive Voice

 

1. The prototype for the Internet (create) by the US Defense Department in the sixties. 2. A variety of devices can (attach) to a computer. 3. While she (search) the Internet yesterday, her computer (crash). 4. What kinds of problems she (have) with hardware recently? 5. These PCs (not / make) in the USA. 6. The company (introduce) the first Game Boy in 1989? 7. Browsing the Web (be) very popular. 8. How long you (have) this website? 9. They (export) a lot of equipment from France for two years. 10. Confidential information (steal) from the database by hackers last week. 11. What time this message (send) yesterday? 12. A dot (use) to separate the parts of each identifier. 13. He (work) for IBM since last year. 14. She always (use) a browser program for looking at pages on the Internet. 15. You (want) to virus check another disk? 16. How she (draw) pictures on a computer? 17. Who this program (write) by?

 

Ex. 16 Open the brackets using Active / Passive Voice

 

1. Colour printing … (be) the reproduction of an image or text in colour. 2. Colour printing … (involve) a series of steps, or transformations, to generate a quality colour reproduction. 3. The "subtractive" primary ink colours … (be) cyan (a bright blue), magenta (a vivid red-purple), and yellow; which … (abbreviate) as CMYK. 4. Specific graphic processes and industrial equipment … (use) for mass reproduction of colour images on paper. 5. A computer screen … (mix) shades of red, green, and blue to create colour pictures. 6. In 1995 there … (be) fewer than 1,000 web development companies in the United States alone, but by 2005 there … (be) over 30,000 such companies. 7. Ivan Sutherland … (develop) a pointer-based system called Sketchpad in 1963. 8. CD … (be available) on the market since October 1982. 9. From its origins as a music format, Compact Disc … (grow) to encompass other applications. 10. Since the mid-1990s, web development … (be) one of the fastest growing industries in the world. 11. By 2007, 200 billion CDs … (sell) worldwide.

 

Ex. 17 Open the brackets using Active / Passive Voice

 

A projection keyboard (be) a virtual keyboard that (can project and touch) on any surface. The keyboard (watch) finger movements and (translate) them into keystrokes in the device. Most systems can also (function) as a virtual mouse or even as a virtual piano. A proposed system called the P-ISM will combine the technology with a small video projector to create a portable computer the size of a fountain pen.

An optical virtual keyboard (invent and patent) by IBM engineers in 1992. It optically (detect and analyse) human hand and finger motions and (interpret) them as operations on a physically non-existent input device like a surface having painted or projected keys. In that way it (allow) to emulate unlimited types of manually operated input devices (mouse, keyboard, etc.). All mechanical input units (can / replace) by such virtual devices, optimized for the current application and for the user's physiology maintaining speed, simplicity and unambiguity of manual data input.

In 2002, the start-up company Canesta (develop) a projection keyboard using their proprietary "electronic perception technology". The company subsequently (license) the technology to Celluon of Korea.


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