We all make mistakes, even when we know the correct spelling or grammar. However, some of the numerous and severe mistakes bely a serious problem of society. Many, many teachers are very intelligent, dedicated people. However, with all due respect to most of them, there are some teachers who really don't speak or write much better. The real crime is that when these teachers try and teach children just learning the basics. . . On the bright side, even if you think you're only average or a bit above on your English mechanical skills, you'll be miles above the pack! ;-)