英语早间课堂:If S had done, S should have done.
一天之计在于晨，若您有个美好的晨间生活，相信您一天的生活都是美好的。A hard beginning makes a good ending. 常言道：善始善终。
【复习】
Last time we learned a sentence pattern: If S + had done, S+would have done. 该句式表示对过去发生的事情的一种假设，句中所说的事情与过去的实际情况相反。
【习题答案及点评】
1 如果早点动身我们就可以赶上巴士了。
If I had left sooner, I would have caught the bus.
【点评】1 该句言外之意就是：I didn't leave sooner and I wouldn't catch the bus. 2 该句子中有个“了”字，凭借语感我们就可以知道“没有早点动身”和“没有赶上巴士”这2个动作已经过去了。
2 我要是Nacy的话，我当时就立即走。
If I had been Nancy, I would have left at once then.
【点评】1 该句言外之意就是：I wasn't Nancy and I wouldn't leave at once then. 2 此句中有个很明显的时间状“当时”，一读句子凭借语感就知道这事儿已经发生过了，“我不是Nancy”这一状态和“Nancy当时没走”这个动作已经过去了。
3 如果当时你处于我的位置，你怎么办?
What would you have said if you has been my position at that moment?
【点评】1 此句言外之意就是：you wouldn't know how to deal with this matter as you weren't in my position. 2 此句话有个很明显的时间状语“当时”，一读句子凭借语感我们就知道这件事情已经发生过了，“你不知道如何处理矛盾”和“你不是处于我的位置”这2个动作都过去了。
4 如果我那时想起了那事儿，我会像母亲提及的。
I would have told it to my mother if I had thought of that.
【点评】1 此句话言外之意就是：I didn't think if that and I wouldn't tell it to my mother.2 该句中有个很明显的时间状语“那时”，一读句子凭借语感就知道“我没有提及”和“我没有想起”这2个动作都过去了。
5 倘若我以前手头不是那么拮据的话，我就不会那么做了。
I wouldn't have done it like that if I hadn't been so hard up.
【点评】1 此句话言外之意就是：I did it like that as I was so hard up before.2 该句中很明显有个时间状语“以前”就表示这事情发生在以前，“我手头拮据”这个状态和“我那样做了”这个动作已经发生过去了。
【今日主题】
This morning I would like to tell you a new sentence pattern : If S had do, S + should do. 这个句式也是对过去发生的事情的一种假设，句中所表示的意思与实际情况相反。那么跟前面讲的句式有何不同呢?不同就在主句中的主语如果是第一人称的话，就可以用should，其他人称不可用，若是第一人称，当然也可用would. 例如习题中的第4.5题就可以改为：I shouldn't have done it like that if I hadn't been so hard up. I should have told it to my mother if I had thought of that.
【温故知新】
各位亲爱的可们，今天的句型你掌握了没有。掌握了就要疯狂练习以达到遇到这样的情景闭着眼睛就能脱口而出。Well , as usual, I would like to give some translation exercises to you.
1 如果我知道那事儿，我就会全部告诉你。
2 如果我们不去散步的话，我们就可以看到晚会的开头了。
3 如果我看到了Tom，我会和他打招呼的。
4 如果我去医院看了Jack, 我会把他的实际病情告诉他的。
5 如果我在努力一点的话，我那时的情况会好得多。
