if能和then在一个句子里一起连用吗?在看短文的时候,看到这个句子:If she decides to go with her sister instead,then I can play tennis with you.

问题描述:

if能和then在一个句子里一起连用吗?
在看短文的时候,看到这个句子:If she decides to go with her sister instead,then I can play tennis with you.

我觉得用了IF,就不要用THEN了,否则没主语了。

完全可以,因为then是副词,不是连接词.
如:If you go,then so will I == If you go,then I will go,too.