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Ss to talk in English . TEACHING AIDS : Cassette ,recorder ,masks (David ,Liu Tao ,YangLing ,Mike ,Nancy ) TEACHING PROCEDURES: Step 1: Warmup : Allow me to introduce myself .My name is ? ,You can call me “ Mr /Miss .” This semester I teach you English .I hope we could get along with each other .First ,let’ s say “ Hello !” : Hello! Hi ! Good morning/Good afternoon . Step2 Presen