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案例分析：(1)下面是一位小学英语老师在课堂中教授现在进行时这一语法项目的话语片断，请根据该片断分析该教师运用了归纳法还是演绎法?该方法有何利弊?
同学们：我们今天将会学习一种新语法项目：现在进行时，现在进行时是用动词的ING形式表示正在进行的动作，比如：
He is singing. She is dancing. Tom is running. Amy is reading.
(2)下面是一位小学英语教师课堂听说教学的真实片断，请你从教学理念和教学步骤等方面分析该教师的听说教学的有效性。
This teacher has just taught preposition and in this lesson she is going to play a card game but she notices that there are a lot of things on pupils’desks so she makes an on-the-spot decision．
T：…Let’s play a card game．Now take out your cards．You all have 5 cards，right?
Ss：Right，yes．
T：OK．Listen．Please look at me…OK，now show me your paper，this one(holds on the pa-per)．Put your paper in your desk．OK，now next show me your books．Right，put your books in your desk．OK，now last，show me your pencil box．Put it in your desk．OK，good…．Now put your cards on the desk，on the left side．
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