When you are writing, words are grouped together ... Someone really should look into that. Anyway, sentences have basic rules. They always start with a capital letter and end with punctuation ...

If you put a bossy verb at the beginning of a sentence, it turns it into a command ... You should also use commands when you are writing instructions telling someone how to do something.

We speak differently than we write. For comprehension development, children need exposure to syntax common to both.