How do you translate the phrase 'complete sentence'? I can't find anything online. Would it be 全句子？
I'm also interested to know how to say 'sentence fragment'.
complete sentence
  
  完全句
  《懶蟲簡明英漢詞典》


or


  full sentence
  
  完全句
  《懶蟲簡明英漢詞典》
  
  完整句子
  《21世紀英漢漢英雙向詞典》


and


  sentence fragment
  
  句子片段
  《21世紀雙語科技詞典》


We usually use a shorter term for "complete sentence", like 全句 or 整句.