四年级英语 · 语法思维导图

基于本学期已学知识点整理(Unit 1–3 词汇/句子 + Unit 3 语法总结 + 国际音标)

语法 Grammar四年级英语核心语法
① 时态 Tenses
一般现在时 Simple Present
  • 表:经常性/习惯性动作、客观事实、长期喜好
  • 结构:主语 + 动词原形;三单 + -s / -es
  • 标志词:oftenalwaysevery day
  • We play basketball there.
  • She often helps James with his Chinese.
现在进行时 Present Continuous
  • 表:此时此刻正在发生的动作
  • 结构:主语 + am / is / are + 动词-ing
  • 单数用 is / 复数用 are
  • The elephant family are playing in the river.
  • 出处:Unit 3 语法 1
② 特殊疑问句 Wh-Questions(5W1H)
特点
  • 用疑问词提问,回答不能只说 Yes / No
  • 结构:疑问词 + 一般疑问句语序
5W1H 疑问词
  • What 什么 Who 谁
  • Where 哪里 — Where are you from?
  • When 什么时候 Why 为什么
  • How 怎么样
例句
  • Where are you from?
  • Where are James and Xiaopu?
③ 一般疑问句 Yes/No Questions
特点
  • 用 Yes / No 回答的问句
三种开头
  • Be 动词:Are you from Sichuan? / Is the polar bear from the North Pole?
  • Do / Does:Do you like monkeys? / Does she help James?
  • Can(情态动词):Can you swim?
回答格式
  • Yes, 主语 + 对应词.
  • No, 主语 + 对应词 + not.
④ 近义 / 同义词组
help 类
  • help sb (do) sth. = help sb with sth.
  • He helps teachers clean the blackboard.
  • She helps James with his Chinese.
来自 / 许多 / 没有
  • be from = come from(来自)
    Pandas are from Sichuan. = Pandas come from Sichuan.
  • lots of = a lot of(许多)
  • have no... = don't/doesn't have any...(没有)
    The classroom has no computers. = ...doesn't have any computers.
其他
  • be good at(擅长;后接名词或 doing)

本图基于 raw_input 三单元词汇表与 Unit 3 语法总结整理;语音(发音)部分详见《国际音标48个》。