Normally, when reading a text, people use a strategy that I call “reading for content”. The goal of this strategy is to get the main idea of the text as quickly as possible and with as little effort as possible. To accomplish this goal, your brain will try to read as few words as possible and spend only a fraction of a second on each word. Reading for content is a great, time-saving way to extract information from written content. The problem is that you may not need grammar words to understand a text, but you do need them to produce a text. If you skip over grammar words while reading, you may have difficulty using them correctly in your own sentences.