英语中,成对的连词不能同时出现在一个句子中,如because和so,although和but,但是如果有一个是副词的话,就没问题.所以:
If you make a mistake,then you will be punished.
也可以说成If you make a mistake,you will be punished.
因为then是副词,不是连词.另外一个类似的副词是yet,如:
Although he is ill,yet he is working as usual.此句中的yet不能改成but.
初中学的不多,就这些吧
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