(If the answer to your question is not already here, I will add it as soon as I receive it)
If What You Search For Is Not-Yet Here... I Will Add It
English Text-Books and Lesson Materials always seem to be written by people who appear to never actually communicate with any other “Real” people. They are always filled with English that reflects Low IQ and it is OFTEN incorrect.
Nearly all traditional text-books and courses are written from & for an “Average” level of intelligence. However today’s average is FAR BELOW “Average”. Those who are learning English as a 2nd (or 3rd) language are almost always far ABOVE “Average”.