GRAMMAR PRACTICE SECTION.
| Verb + -ing or infinitive. 1. Match the sentences with the explanations. | 
|
| 1. Verb+-ing | a. They stopped looking/to look at the flowchart. |
| 2. Verb+being+verb in the 3rd form | b. To prevent anyone changing the data he disabled the keyboard. |
| 3. Verb+-ing/infinitive=little change in meaning | c. The programmer didn’t let me install this new operation system. |
| 4. Verb+to be+verb in the 3rd form | d. Some viruses cause computers to crash. |
| 5. Verb+object+to+infinitive | e. Some people can’t afford to buy a modern PC. |
| 6. Verb+bare infinitive (without to) | f. The company intends to use/using computers in the production process. |
| 7. Verb+-ing/infinitive=change in meaning | g. Invalid data risks being processed incorrectly. |
| 8. Verb+to+infinitive of purpose | h. Any new software requires to be tested before use. |
| 9. Verb+to+infinitive | i. Analytical engine was invented to store data. |
2. Put the verbs in brackets into the correct form (–ing or infinitive). Sometimes both are possible.
- Backing up involves (copy) current working files onto a separate storage disk.
- Don't forget (save) the file before switching off.
- The engineer managed (recover) all the lost data, though it took a long time.
- I remember (shut) down the computer before I left the room.
- Scientists considered silicon (be) one of the best materials for the creation of an IС.
- Experts expect computers (become) the most commonly used devices.
- If you don’t save your document every few minutes you risk (lose) all the work you’ve done.
- Keyboard enables (input) numerical and text data.
- They want this software (simulate) the action of an aircraft.
- This program seems (work) correctly the first time it is tested.
- Computers were designed (perform) thousands of computations per second.
- Engineers expect these new devices (test) very soon.
- The hacker denied (break) into our computer system.
- Banks spend millions of dollars (try) to stop new kinds of computer crime.
- Blue-ray discs let you (store) far more data than DVD discs.
- Using computers (create) graphics and sounds, virtual reality makes the viewer (believe) he or she is in another world.
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