The Seven Deadly Sins of Punctuation And How You Can Avoid Them (Note: Read carefully. They preface each "faux pas," telling you the correct usage, but provide the WRONG way as examples. It's confusing).
All modal verbs are auxiliary verbs, which means they can only be used with a main verb. Modal verbs cannot be a main verb. They are used to express ideas such as possibility, prediction, speculation, deduction and necessity.
List of silent letters from a to z available to download in PDF. Silent Letters in English from A to Z. The English language has a lot of silent letters. Silent letters cause difficulties for both native speakers and English learners, because they make the spelling of words different from their pronunciation.To help with English grammar