1.Many people, especially those who grew up before the age of the personal computer, don’t understand how computers store information.
The relative pronoun <em>who</em> is modifying the noun phrase: ‘many people’, and the relative clause ‘who grew up before the age of the personal computer’ is functioning as an adjective.
2.That information is stored in electronic files. Those files function much like file folders.
That is a demonstrative pronoun which points to a noun, in this case ‘information’. <em>Those</em> is also a demonstrative pronoun, in plural who is referring to the noun ‘files’
3.Each file is given a name. The name given to each, its filename, should represent the information found in the file.
‘each’ is an adjective that modifies the noun ‘file’. In the second sentence, ‘each’ is an adverb and acting as a direct object of the verb ‘give’ in passive voice.
4. What is the difference between the way a computer stores information and that used to store information in a conventional filing cabinet?
‘what’ is an interrogative pronoun, used to ask a direct question.
5. That explanation isn’t as clear as the one all of us heard at the lecture yesterday.
That is a demonstrative pronoun which points to a noun, ‘explanation’.
6. Which flowers are the most beautiful? These lilies are very nice, but they’re less interesting than those.
‘which’ is an interrogative pronoun, used to ask questions about things. ‘these’ is a demonstrative pronoun in plural, whereas ‘those’ is a demonstrative pronoun that refers to distance.
7. Many houses are comfortable, but few are as comfortable as this cottage.
‘Many’ and ‘few’ are quantifiers and act as adjectives, modifying the noun ‘house’.
8. Many people were crowded into a very small space. All agreed that it was time to enlarge the office space.
<em>‘Many’</em> is a quantifier modifying the noun <em>‘people’</em> and <em>‘all</em>’ is a predeterminer making reference to the people previously mentioned.
9. Several examples are often helpful. Which example don’t you understand?
‘several’ is an indefinite pronoun, used for non specific things. And ‘which’ is an interrogative pronoun, used to ask a direct question about things.
