s in a phrase. They can be found in both British and Vietnamese language systems. However, prepositions have different characteristics and consumption in each words. The usage of prepositions could cause plenty of trouble for Vietnamese people when learning English and vice versa. Therefore, this newspaper aims at studying British and Vietnamese prepositions in a contrastive view, especially in displaying path and location so that leaner's can find it simpler to learn them. This newspaper also provides some implications for teaching prepositions which can be useful for individuals who teaching British or Vietnamese. Through these implications, I hope they can help teachers know how to help students use prepositions appropriately and correctly.
The PLC model is of some degree of effectiveness to marketing professionals, in that it is dependant on factual assumptions. Nevertheless, it is difficult for marketing management to determine accurately where a product is on its PLC graph. A rise in sales per se is definitely not evidence of progress. A fall season in sales by itself will not typify drop. Furthermore, some products do not (or even to date, at the least, have not) experienced a decrease. Coca Cola and Pepsi are types of two products which have existed for many decades, but are still popular products all over the world. Both methods of cola have been in maturity for a few years.
Another factor is the fact that differing products would possess different PLC "shapes". A fad product would hold a steep sloped development stage, a short maturity stage, and a steep sloped decrease stage.