... eighteen nineteen twenty S1: speak Vietnamese “ sè 1” S2: speak English “one” S3: write it on the board “one” Unit 1: Lesson 4: C1- 4/ P. 17- 19 III. Listen to the tape: IV. Complete the dialogue:V. ... Complete the dialogue: 2. Practice with a partner Unit 1: Lesson 4: C1- 4/ P. 17- 19 *Exercises: I. §iÒn c¸c d¹ng am, is vµ are vµo kho¶ng trèng: a.This .. Mary d. How . you ?… … b. My name . Peter. ... 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-...