Rules of the letters R - RR
The letter R when is written simply has a soft sound, as in the words:cara, pera or mira. When you type double, RR, it has a strong sound like in the words barro, cerro or perro.
The difficulty of this letter is that sometimes it is written simply, R, but it has a strong sound like in the words risa or alrededor.
Let's see some rules that will help us know when we should write with R o RR.
Rules of Words that are written with R
Nº. 1
At the end of a word. In these cases it has a soft sound
Nº. 2
In the middle of a word, with soft sound.
Nº. 3
After the consonants B, C, D, F, G, P and T with soft sound.
Nº. 4
At the beginning of the word. In these cases it has a strong sound.
Nº. 5
After the consonants L, N and S , it has a strong sound.
Nº. 6
After the prefix sub, also has a strong sound.
Rules of Words that are written with RR
Nº. 1
The letter RR is written in the strong sounds that go between vowels.
Nº. 2
The negation prefix in becomes ir when it goes in front of r.
Nº. 3
In compound words whose first element ends in vowel and the second begins with r.
Excepciones: