关于英语句子中的大小写.
(1)MostexpressionsinChinesethedogs,forexample,"ahomelessdog","amaddog","arunningdog",and"adogcatchingamouse",havenegativemeanings.
(2)Forexample,"youarealuckydog"meansyouarealuckyperson.
这两句话中引用的部分开头字母是否需要大写?