英语句子功能详解与示例
句子是表达完整思想的基本单位,其功能决定了我们如何传递信息、表达情感或促使行动。掌握各类句子的功能和结构对理解和运用英语至关重要。
陈述句 (Declarative Sentences)
功能: 陈述事实、表达观点、传递信息。是使用最广泛的句子类型。
结构: 主语 + 谓语(动词) + (宾语/补语/状语) + .
例句:
The sun rises in the east. (陈述自然现象)
She enjoys reading science fiction novels. (陈述个人喜好)
They will arrive tomorrow morning. (陈述未来计划)
疑问句 (Interrogative Sentences)
功能: 提出问题,寻求信息。
结构 & 分类:
一般疑问句 (Yes/No Questions): 助动词/情态动词/Be动词 + 主语 + 主要动词 + ... + ? (期待'Yes'或'No'的回答)
Do you like coffee? (Do + you + like...)
Is she coming to the party? (Is + she + coming...)
Can they swim? (Can + they + swim)
特殊疑问句 (Wh- Questions): 疑问词 (What, Where, When, Why, Who, Whom, Whose, Which, How) + 助动词/情态动词/Be动词 + 主语 + 主要动词 + ... + ? (询问具体信息)
What is your name? (询问事物)
Where do you live? (询问地点)
Why did he leave early? (询问原因)
How are you feeling? (询问方式或状态)
选择疑问句 (Alternative Questions): 提供选项供选择 + ?
Would you like tea or coffee?
Is it raining or snowing outside?
反义疑问句 (Tag Questions): 陈述部分 + 逗号 + 简短反义疑问部分(?) (寻求确认或赞同)
It's a beautiful day, isn't it? (寻求赞同)
You didn't see him, did you? (寻求确认)
祈使句 (Imperative Sentences)
功能: 发出命令、提出请求、给予指示或建议。
结构:
肯定: 动词原形 (+ 宾语/补语) + . (主语you通常省略)
Open the window, please. (请求)
Be quiet! (命令)
Turn left at the next corner. (指示)
否定: Don't/Do not + 动词原形 + ... + .
Don't be late.
Do not touch the exhibits.
注意: 主语you有时会为了强调而出现(常带感情色彩),如:You be quiet! Don't you dare!
感叹句 (Exclamatory Sentences)
功能: 表达强烈的情感,如惊讶、喜悦、愤怒、失望等。
结构: 常以What或How开头,句末用!
What + (a/an) + (形容词) + 名词 + (主语 + 谓语)!
What a beautiful sunset (this is)! (名词短语a beautiful sunset是核心)
What an interesting idea (you have)!
What lovely flowers (those are)! (复数名词,不用a/an)
How + 形容词/副词 + (主语 + 谓语)!
How beautiful (the sunset is)! (修饰形容词beautiful)
How quickly (time flies)! (修饰副词quickly)
How (I miss you)! (修饰整个句子,省略形容词/副词,较口语化)
其他形式: 单个词或短语加!也能构成感叹句:Wonderful! Oh no! Look out!
存在句 (Existential Sentences - There be 句型)
功能: 表示某处存在某人或某物。核心在于引出“存在”这一概念,而非动作。
结构: There + be动词 (is/are/was/were/has been/have been/will be...) + 主语(真正要说明存在的事物) + 地点/时间状语 (+ 其他修饰语) + .
关键点:
There是形式主语,无实际词汇意义,仅引导句型。
真正的主语在be动词之后,决定了be动词的单复数形式。
例句:
There is a book on the table. (单数主语a book)
There are many students in the library. (复数主语many students)
There was a storm last night. (过去时)
There will be a meeting tomorrow. (将来时)
Is there any milk left? (疑问句形式)
功能说明: 用于描述场景、介绍新信息或强调某物的存在性。
总结口诀:
陈述讲事实,疑问求信息。祈使表使令,感叹抒情绪。存在表“有”字,结构要牢记。语序助动词,感叹辨名形。语境最关键,理解深含义。
通过系统掌握各类句子的结构特征、功能用途以及核心考点对应的答题技巧,你就能在英语学习和各类考试中更加游刃有余地理解和运用句子这一语言的基本单位。
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