for beginning and intermediate learners. The most widely used edition is the 1971 release from the University of Michigan Press. Amazon.com
: While originally published decades ago (major revisions in 1971), it remains a staple in ESL classrooms due to its clear dissection of confusing structures. Google Books Accessing the Content englishsentencestructurerobertkrohnpdf new
: Supplementary PDFs for the workbook exercises are often hosted on educational sites like mielanguage answer key for a particular set of exercises in the book? for beginning and intermediate learners