11 Perhaps, language should be looked upon as a road map and a valuable possession: often study the road map ( check grammar ) and tune up the car engine ( adjust vocabulary ). Learning grammar and a good vocabulary is just like driving with a road map in a well - conditioned car. 12 The road map provides the framework and guidance you need for your trip, but it won't tell you exactly what trees or flowers you will see, what kind of people you will encounter, or what types of feelings you will be experiencing on your journey. Here, the vocabulary makes the journey's true colors come alive! A good vocabulary enables you to enjoy whatever you see as you drive along. Equipped with grammar and a good vocabulary, you have flexibility and excellent control. While the road map guides your journey to your destination , an excellent vehicle helps you to fully enjoy all of the sights, sounds and experiences along the way. 13 Effective, precise , and beneficial communication depends upon grammar and a good vocabulary, the two essential assets for students, but they are not being taught in schools.