Unit 1 Big or Small,happy,Im happy. 我很开心,Are you happy ?你开心吗,Yes, I am . 是的，我是,sad,Im sad. 我很难过,Are you sad ? 你难过吗,No, Im not . 不，我不难过,cold 寒冷,Are you cold ,Yes, I am,No, Im not,Im cold. 我很冷,hot 炎热,Are you hot ,Yes, I am,No, Im not,Im hot. 我很热,I can see,sad,sad,I can see,cold,cold,I can see,happy,happy,I can see,hot,hot,Lets sing,tall,Were tall. 我们很高,Are you tall,你们很高吗,Yes, we are,是，我们是,short,Are you tall ,No, we arent,Were short,big,Theyre big. 它们很大,Are they big? 它们很大吗,Yes, they are. 是，他们是,smal
