学习目标：
New words: grow，programmer，engineer, pilot，professional，act，move
Key phrases: grow up，move to, computer programmer, practice basketball, computer science,
take acting lessons, professional basketball player
Key sentences:
—What are you going to be when you grow up?—I’m going to be a basketball player.
—How are you going to do that?—I’m going to practice basketball every day.
学习重难点：掌握＂be going to + 动词原形＂的用法。
前置学习:
Listen to a song and write down as many words about jobs as you can.
