... eleven = thirteen = fourteen Unit 1: Lesson 4: C1- 4/ P.17- 19 I. Vocabulary: sixteen: seventeen: eighteen: nineteen: twenty: 16 17 18 19 20 Unit 1: Lesson 4: C1- 4/ P.17- 19 II. Practice: 1. ... five Unit 1: Lesson 4: C1- 4/ P.17- 19 I. Numbers: II. Model sentences: * Summary: Sixteen, seventeen, eighteen, nineteen, twenty - How old are you ? - I m twelve’ Unit 1: Lesson 4: C1- 4/ P.17- ... Lan.…… … Miss Hoa: , Lan. How old . ?…… ……… Lan : I’m .…… Hello Hello are you eleven is Unit 1: Lesson 4: C1- 4/ P.17- 19 *Model sentences: - How old are you ? - I’m eleven How old + be + S ? -...