At ECU, the beginning German students get three(?) books:
* A textbook to teach them German.
* A workbook to practice German.
* English Grammar for Students of German to teach them English grammar.
No, really. 'Chapter 7: What is a Verb?' 'Chapter 15: What is a Sentence?'
Sadly, this book really is needed. Okay, we all know what a verb is (I hope), but often people find themselves unable to define 'infinitive' or 'modal verb', though usually I suspect they can give examples.
But that courses for teaching American college students German must also teach the Americans English is sad.