為了確保函電中句子的流暢，最好避免連用短而零散的句子。雖然每一個零散句較短，但勢必要重復前面的句子中某些成分。比較：

    We wrote a letter. It was addressed to Mr.Henry. He is the Sales Manager.

    We wrote a letter to Mr.Henry, the Sales Manager.

    零散句往往使讀者不能在各個意思中間找到其內在的聯系，而且也難使讀者分出哪是最重要的意思。比較：

    Successful goal - setting is not easy. It is a process in which we continually evaluate our objectives.

    In successful goal - setting, we continually evaluate our objectives.