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http://sleepcreep.clipdump.com/
http://www.scribd.com/doc/11365316/La-Hibridacion-y-El-atomo-de-Carbono1http://books.google.com.co/books?id=x4N0NPso_GIC&pg=PA156&lpg=PA156&dq=hibridacion+del+xenon&source=bl&ots=lY9sQJo-cT&sig=Ucz4kINTflQ4trYwMSPpZabAF0k&hl=es&ei=jJZ3SsGgNoGktgfIy9yWCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=&f=false

 I neither drink nor smoke , to remember
Comparison of Adjectives
Positive Form
Use the positive form of the adjective if the comparison contains one of the following expressions:
as … as
Example: Jane is as tall as John.
not as … as / not so … as
Example: John is not as tall as Arnie.
Comparative Form and Superlative Form(-er/-est)
* one-syllable adjectives (clean, new, cheap)
* two-syllable adjectives ending in -y or -er (easy, happy, pretty, dirty, clever)
positive form | comparative form | superlative form |
clean | cleaner | (the) cleanest |
Exceptions in spelling when adding -er / -est
* silent ‘e’ is dropped
Example: late-later-latest
* final ‘y’ after a consonant becomes i
Example:easy-easier-easiest
* final consonant after short, stressed vowel is doubled
Example: hot-hotter-hottest

Comparative Form and Superlative Form (more/most)
* adjectives of three or more syllables (and two-syllable adjectives not ending in -y/-er)
positive form | comparative form | superlative form |
difficult | more difficult | most difficult |
Comparative Form and Superlative Form(irregular comparisons)
positive form | comparative form | superlative form |
good | better | best |
bad / ill | worse | worst |
little (amount) | less | least |
little (size) | smaller | smallest |
much / many | more | most |
far (place + time) | further | furthest |
far (place) | farther | farthest |
late (time) | later | latest |
late (order) | latter | last |
near (place) |nearer | nearest |
near (order) | - | next |
old (people and things) | older | oldest |
old (people) | elder | eldest |

Positive Form | Comparative | Superlative |
good  | better | best |
→ irregular comparison |
wide  | wider | widest |
→ One-syllable adjectives are compared with -er/-est. |
pretty  | prettier | prettiest |
→ Two-syllable adjectives ending in -y/-er arecompared with -er/-est (y becomes i). |
wild  | wilder | wildest |
→ One-syllable adjectives are compared with -er/-est. |
easy  | easier | easiest |
→ Two-syllable adjectives ending in -y/-er are compared with -er/-est (y becomes i). |
|

Positive Form | Comparative | Superlative |
cold  | colder | coldest |
→ One-syllable adjectives are compared with -er/-est. |
windy  | windier |windiest |
→ Two-syllable adjectives ending in -y/-er are compared with -er/-est (y becomes i). |
wonderful  | more wonderful | most wonderful |
→ Adjectives of three or more syllables are compared with more/most. |
quiet | | |
slow  | slower | slowest |
→ One-syllable adjectives are compared with -er/-est. |

Positive Form | Comparative | Superlative |
clever  | cleverer |cleverest |
→ Two-syllable adjectives ending in er are compared with -er/-est. |
tired  | more tired | most tired |
→ Two-syllable adjectives not ending in -y/-er are compared with more/most. |
windy  | windier | windiest |
→ Two-syllable adjectives ending in -y/-er are compared with -er/-est (y becomes i). |
safe  | safer | safest |
→ One-syllable adjectives are compared with -er/-est. |cloudy  | cloudier | cloudiest |
→ Two-syllable adjectives ending in -y/-er are compared with -er/-est (y becomes i). |

Positive Form | Comparative | Superlative |
dark  | darker | darkest |
→ One-syllable adjectives are compared with -er/-est. |
foggy  | foggier | foggiest |
→ Two-syllable adjectives ending in -y/-er are compared with -er/-est (y becomes i). |
comfortable  |...