一、字母大写正确地使用大写字母是写作中一个不能疏忽的问题。大写字母除了用于句首、称呼、专有名词等外,下面几种情况也应予以注意:1.句子中直接引语的第一个字母要大写,无论“某某说”一类的说明语是在句首还是在句尾。如:She said,“It is unreasonable to expect such a thing.”但是,当直接引语是一个句子的继续时,则不用大写字母。如:“It is unreasonable,”she said,“to expect such a thing.”2.表示学科名词的第一个字母一般用小写,但 First, the capitalization of the alphabet Correct use of capital letters is a writing can not be ignored. In addition to capital letters used in the first sentence, address, proper nouns, etc., the following situations should also be noted: 1. The first sentence of the phrase directly to the capital letter, regardless of The description is at the beginning of the sentence or at the end of the sentence. Such as: She said, “It is unreasonable to expect such a thing. ” However, when a direct quote is a continuation of a sentence, no capital letters are required. Such as: “It is unreasonable, ” she said, “to expect such a thing. ” 2 that the first letter of the subject noun is generally lowercase, but