Comparative adjetives

Comparative adjectives are used in English when we want to compare only two different things. They are very common and are therefore very useful to learn and to use ‘correctly’. I say ‘correctly’, because a lot of students know about and have some experience with comparatives, however, I am quite often ‘fixing’ them even with my advanced students.
First you must ask yourself, ‘How many things am I comparing?‘ If you are comparing only two things then you must use a comparative, if it’s three of more, then it must be a superlative (see below).
You then need to decide if the Adjective you are using is either one syllable, two syllables ending in ‘y’, or 2 or more syllables. The forms for each type are in the image.
A comparative adjective is used when we want to compare two things.  In English we either add ‘-er’ to the adjective or use ‘more / less ….. than …‘ :

e.g.  tall = taller,   beautiful = more beautiful

In Spanish the ‘-er’ form does not exist and we only use the ‘more / less …… than …….‘ way of comparing things
Para escribir frases comparativas: 
Se usa el verbo + adjetivo comparativo + than + objeto 
She is taller than her sister. Ella es mas alta que su hermana.
Today is hotter than yesterday. Hoy es mas caluroso que ayer