简单描述类 A sentence is a group of words that expresses a complete thought.（句子是一组表达完整思想的词。）
Simple sentences contain a subject and a verb.（简单句包含一个主语和一个谓语动词。）
Complex sentences have one main clause and at least one subordinate clause.（复合句有一个主句和至少一个从句。）
Declarative sentences make statements.（陈述句用于陈述事实。）
Interrogative sentences ask questions.（疑问句用于提问。）
语法结构类 In an imperative sentence, the subject is usually understood rather than stated.（在祈使句中，主语通常是不言而喻的，无需明确说出。）
A compound sentence consists of two or more independent clauses joined by a coordinating conjunction.（并列句由两个或多个独立的分句通过并列连词连接而成。）
The predicate of a sentence tells what the subject is doing or what is happening to it.（句子的谓语说明主语在做什么或主语发生了什么事。）
Subject-verb agreement means that the verb must agree with the subject in number and person.（主谓一致是指动词必须在数和人称上与主语保持一致。）
Relative clauses are used to modify nouns in a sentence.（关系从句用于修饰句子中的名词。）
功能用途类 Exclamatory sentences express strong emotions or excitement.（感叹句表达强烈的情感或兴奋之情。）
Negative sentences are used to deny something.（否定句用于否定某事。）
Affirmative sentences state positive facts.（肯定句陈述肯定的事实。）
Conditional sentences express a condition and its result.（条件句表达一种条件及其结果。）
Passive voice sentences focus on the receiver of the action rather than the doer.（被动语态的句子关注动作的承受者而非执行者。）
写作应用类 Using a variety of sentence structures can make your writing more interesting.（使用多种句子结构可以使你的写作更有趣。）
Short sentences can be used for emphasis.（短句可用于强调。）
Long and complex sentences can convey detailed information.（长而复杂的句子可以传达详细的信息。）
Transitions between sentences help to make the text flow smoothly.（句子之间的过渡有助于使文章流畅。）
Topic sentences introduce the main idea of a paragraph.（主题句引出段落的主要思想。）
口语交流类 In spoken English, sentences may be less formal.（在英语口语中，句子可能不那么正式。）
We often use elliptical sentences in casual conversations.（我们在随意的对话中经常使用省略句。）
Tag questions are added to the end of a sentence to seek confirmation.（附加疑问句加在句子末尾以寻求确认。）
Imperative sentences are commonly used to give commands or make requests.（祈使句常用于发出命令或提出请求。）
Rhetorical questions are asked not for an answer but to make a point.（反问句不是为了得到答案，而是为了表明观点。）
文学赏析类 Poets often use unique sentence structures to create rhythm and mood.（诗人经常使用独特的句子结构来营造节奏和氛围。）
The length and structure of sentences in a novel can affect the pace of the story.（小说中句子的长度和结构会影响故事的节奏。）
Shakespeare's plays are full of complex and beautiful sentences.（莎士比亚的戏剧充满了复杂而优美的句子。）
In literature, sentences can be used to develop characters and advance the plot.（在文学作品中，句子可用于塑造人物和推动情节发展。）
Analyzing sentences in a literary work helps us understand the author's intentions better.（分析文学作品中的句子有助于我们更好地理解作者的意图。）