Basics In Grammar

     This is a complete system which makes one language different from another.
We know that German is different from French,for example. They sound different and, on page, they look different. What makes them different is a matter of Grammar. Their grammars are different.
      It has been helpfully said that languages are 'rule governed'. That means that we can't Just make them up anyhow and do what we like when we speak or write them.
If we want to know or check the way a word should be spelt, we can either look It up in a dictionary or Use a computer spellchecker. And we can be confident that the spelling of the word will Stay the Same.