Tri Duc English - Unit 73 🔗 TRI ĐỨC ENGLISH 2026 • Pre-Intermediate UNIT 73 COMPOUND NOUNS LÝ THUYẾT TỪ VỰNG A. Formation We form compound nouns by putting two words together (or three) to create a new idea. Compound nouns are very common in English. Ice hockey is a game of hockey played on ice. Public transport is transport that can be used by the public. A campsite is a site for camping. [a place used for a special purpose] A babysitter is someone who looks after young children when their parents go out. Income tax is money you pay to the government out of your income . Your mother tongue is the first language you learn as a child. A travel agent is someone whose job is to make travel arrangeme...