additional logistics and transportation costs（shopping）

Designed for beginners and those who wish to improve their communicative skills. It includes 10 topics: Social Communication, Time and Weather, Location, Eating, Shopping, Transportation, Communication, Studying and Working, Leisure Activities, and Traveling. Each topic involves 2 parts: Dialogue and Substitution Drills. Readers can learn the commonly used daily conversations from the Dialogue and then take the extension exercises in Substitution Drills to have a mastery of sentence structures.