Unit 2 please touch your head hairearmouthnoseeyeheadhandfoot legarmPractise:Ask and answer: Whats this?Touch your bodyeyesearshandsarmslegsfeetneckheadmouthfacebigsmallwidelongshortroundbi sm:l rand l wad /:t/ Whats this ? Its a big hand. What are these? They are hands. Whats this? Its an arm. What are these? They are arms. Whats this? Its an eye. What are these? They are small eyes. Whats this ? Its a foot. What are these? They are feet.Whats this ? Its a/an 这是什么？这是、 What are these? They are 这些是什么？这些是、What is this ? It is a/anWhat are these? They are an arm /an ear/ an eye/a head /a hand/a nose/a footarms/ears/eyes/heads/hands /noses/feethair ?下列哪些单词前加a,哪些加an: apple ,bag,book,orange,map,