List<object>转换成IList<Word>

var words = new List<object>();

public void WriteWords(IList<Word> words){    foreach (var word in words)        {                      }}

WriteWords(words.Select(item => (Word)item).ToList()));

1.words是个object类型
2.方法WriteWords的参数类型是IList<Word>
3.调用WriteWords方法需要把List<object>转换成IList<Word> words

WriteWords((List<Word>)words);

这样是行不通的，不能直接把List<object>转换成List<Word>，需要将List<object>每个object遍历，每个object转换成Word类型，再从新转换成List