Unit 1 Draw a cat on the roof.教学目标: Able to understand and say the new words: a roof, above, a chimney, in front of, understand the word pin.Able to grasp new sentence form: Draw a cat on the roof.”Able to use correctly “ There be…” and repositions.教学重点及难点: 重点: Grasp the four--skilled words; grasp the affirmative of imperatives难点: Use “ There be….” To describe position relation.教学准备: Word card, picture, d..