When you have a phonetic language like Spanish, for instance, it is quite easy to say the words you have learned from a book or  a dictionary because if you know the sounds of each letter you can do quite well when speaking the language and everybody will understand you. But this is not the case with English which for a lot of people seems like a `crazy´language with its own rules. I already mentioned this feature of English in a post on phonetics and here I’m going to mention another feature of English that will also look pretty strange to many language learners, that is, letters that appear in words but should not be pronounced. I have created a slide with some of these letters and a practical activity that you can do if you click on the button below.