1.As long as there is life there is hope.2.You can go out,as long as you promise to be back第一个句子是不是差个引导词?第二个句子为什么不能直接连接?

问题描述:

1.As long as there is life there is hope.2.You can go out,as long as you promise to be back
第一个句子是不是差个引导词?第二个句子为什么不能直接连接?