The document discusses definite and indefinite articles ("a" vs "the") and provides examples of their usage. There are five sources that can make a noun definite: 1) if it is previously mentioned, 2) if it contains a superlative adjective, 3) if it is a unique entity, 4) if it contains a modifying phrase, and 5) if the context makes the identity clear. Count vs non-count nouns are also discussed, as well as examples of definite vs indefinite usage like "the milk" vs "a drop of milk". Photo credits are provided.

1. Articles inEnglish

2. Who Knows? Definite or Indefinite Count / Noncount

3. Who Knows?

4. My love is a rose.

5. A rose A rose

6. A rose

7. The rose in the park A rose

8. A rose

9. Definite or Indefinite

10. Definite – the sign

11. Indefinite – a sign

12. General or Specific? I put a book in your room. The book is on your desk. Do you know which book? We know which book.

13. Definite / Indefinite

15. 5 sources of definiteness Previously mentioned. I saw a one-eared cat outside my house. The cat seemed to be very suspicious when I approached it.

16. Superlatives or ranking adjectives make a noun definite. The best team in the league is the Gators. 5 sources of definiteness

17. Superlatives or ranking adjectives make a noun definite. The third paragraph contains the right answer. 5 sources of definiteness

18. The noun is a unique person, place, or thing. The sun rotates around the earth. I find many useful sites on the internet. 5 sources of definiteness

19. A modifying phrase or clause makes the noun more definite. The student in the back row seems to know all the answers. 5 sources of definiteness

20. A modifying phrase or clause makes the noun more definite. The girl who made the winning shotlives next door to me. 5 sources of definiteness

21. The context of situation makes the identity clear. I am going to the library. Both students at SFCC know which library. 5 sources of definiteness

23. Who Knows? Definite or Indefinite Count / Noncount

25. Source: http://www.rpi.edu/web/writingcenter/esl.html

27. the milk

28. a drop of milk

29. Did you leave the milk on the table?

30. What does it mean? I got the A on the exam. I got an A on the exam. The good teachers are at SFC.

31. Who Knows? Definite or Indefinite Count / Noncount

32. Photo credit: http://www.flickr.com/photos/52971398@N00/468886018 Photo credit: http://www.flickr.com/photos/49922542@N00/474536523 Photo credit: http://www.flickr.com/photos/33682677@N00/1241953376 Photo credit: http://www.flickr.com/photos/47662508@N00/2508125733

33. Photo credit: http://www.flickr.com/photos/56044438@N00/2464619281 Photo credit: http://www.flickr.com/photos/34427466731@N01/131012552