写正确、有效的句子 > 知识学习 > 正确的句子 >
Overview（概述）
All kinds of writing are made up of sentences. If we want to write well, we should learn to write correct and good sentences. In this section, we shall discuss the requirements of a correct sentence.
There are at least these requirements:
1. it should be structurally complete; （结构完整）
2. it should begin with a capital letter; （句首字母大写）
3. it should end with a full stop, or a question mark, or an exclamation mark; （句末为句号、问号或感叹号）
4. it should express a single complete idea.（表达单个、完整的意思）
