A Picture of Language:The Fading Art of Diagramming Sentences by Juana Summers on August 22, 2014 7:18 AM ET. Beginning of the article introduces diagramming sentences to us. And this is a way to learn English grammar. This method of learning in education were all the rage, but in 1960s this approach has been criticized to learning. In 1985， the teacher of English put: This way to learn English grammar, were controversial.