I am not claiming to be an English teacher, I just claimed to be a teacher who speaks English as a native language, my spelling is not always perfect, possibly down to dislexia not ability, or maybe down to using a computer that auto corrects and I don't always check when when I deem it unimportant. However had the sentence been spoken you would be unaware of the grammatical mistake unlike the rest of the posting which made very rudimentary mistakes. My mistake was of the "Eats, Shoots and Leaves" variety rather than basic English. Regarding the quality of my own parenting and the teaching of English, both my children were tested at age 12 and had English language usage (grammar and vocabulary) of 18 plus. I recently turned down a position as an English teacher in a school because I believe speaking English is not enough of a qualification to teach it, in the same way as being able to add up doesn't make you a maths teacher, know how to turn on a computer does not make you a technology teacher and jogging once a week doesn't qualify you to teach Physical Education! Teachers make mistakes because they are human - it is the level and frequency of those mistakes which defines ones suitability to the task.