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grammar
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AI 英语语法知识库
时态
Tenses
9
一般现在时
Simple Present Tense
一般将来时
Simple Future Tense
一般过去时
Simple Past Tense
现在完成时
Present Perfect Tense
现在完成进行时
Present Perfect Continuous Tense
过去完成时
Past Perfect Tense
现在进行时
Present Continuous Tense
过去进行时
Past Continuous Tense
将来进行时
Future Continuous Tense
从句
Clauses
7
定语从句
Relative Clauses
名词性从句
Noun Clauses
状语从句
Adverbial Clauses
宾语从句
Object Clauses
主语从句
Subject Clauses
同位语从句
Appositive Clauses
条件状语从句
Conditional Clauses
非谓语动词
Non-finite Verbs
6
动名词
Gerunds
不定式
Infinitives
现在分词
Present Participles
过去分词
Past Participles
非谓语作主语
Non-finite as Subject
非谓语作状语
Non-finite as Adverbial
句子结构
Sentence Structures
4
主谓宾结构
SVO Structure
并列句
Compound Sentences
复合句
Complex Sentences
平行结构
Parallel Structures
学术写作
Academic Writing
5
正式语气
Formal Tone
避免口语化
Avoiding Informal Language
学术句型
Academic Sentence Patterns
段落结构
Paragraph Structure
论证表达
Argumentative Structures
PTE 高频语法
PTE Grammar Patterns
4
Essay 高频句型
Essay Structures
SST 学术句型
SST Academic Structures
WFD 高频结构
WFD Sentence Patterns
Speaking 常用表达
Speaking Structures
Grammar Knowledge Base
Master English grammar for PTE & IELTS with AI explanations
AI Grammar Assistant
Grammar Learning Platform
AI 驱动英语语法学习系统
Learn grammar structures, academic writing, sentence patterns, and PTE-focused English through AI-generated explanations and intelligent practice systems.
Grammar Statistics
AI Knowledge Overview
Grammar Topics
120+
Academic Structures
500+
PTE Grammar Coverage
Full