Grammar

From Wikipedia

Grammar refers to the rules about how to speak and write well in the language.

For example, Spanish grammar is different from English grammar. Both have different rules. In English we might say "I like fast cars", but in Spanish it is "me gustan los coches rápidos." The order of the words has changed: if you just translate the words alone, and not the grammar, back to English, you get "me please the cars fast". Even though this is wrong English grammar, it is right in Spainish. This is because Spanish and English have different rules about word order.

Grammar is slowly changing. Sentences we find normal today would have seemed strange to people 100 years ago. Some people use grammar that is different from others' when speaking. They might say, "I didn't do nothing" rather than "I didn't do anything". They usually do this because that is what is normal in air family or the area where ay live.