四年级英语语法汇总

小学三四年级英语语法汇总小学三四年级英语语法汇总 物主代词 数人称主格宾格 所有格 形容词 性物主 代词 名词性 物主代 词 反身代词 第一人 称 我Imemyminemyself 第二人 称 你youyouyouryoursyourself 他hehimhishishimself 她sheherherhersherself 单数 第三人 称它itititsitsitself 第一人 称 我们weusouroursourselves 第二人 称 你们youyouyouryoursyourselves复数 第三人 称 他们 她 们 它们 theythemtheirtheirsthemselve s 一 陈述句 定义 是用来陈述一件事情或表示一种看法 可分为肯定句和否定句两种形式 1 谓语动词是 be 动词 助动词 do have has 情态动词 can 等时 只要直接在这些词后面加 not 就构成否定形式 eg Lily has already read this new book 改为否定句 Lily this new book 2 谓语动词是行为动词而又没有助动词或情态动词时 必须在谓语动词前加助动词 一般 现在时加助动词 do 第三人称单数加 does 一般过去时加 did 再和 not 构成否定结构 必须指出的是 don t doesn t didn t 后都用动词原形 eg 1 Jill has lunch at school every day 改为否定句 Jill lunch at school every day 2 The children had a good time at the party 改为否定句 The children a good time at the party 3 Rose didn t drink any milk this morning 改为肯定句 Rose milk this morning 二 疑问句 定义 是用来提出问题的句子 常用疑问词 疑问词意思用法 What time什么时间问具体时间 如几点钟 Who谁问人 Whose谁的问主人 Where在哪里问地点 What什么问东西 事物 What colour color 什么颜色问颜色 How old多大年纪问年纪 How many多少数量 可数名词 问数量 How much多少钱 多少数量 不可数名 词 问多少钱或数量 不可数 A 一般疑问句 以 be 动词 have has do 等助动词 can may 等情态动词开头 以 yes 或 no 来回答的问句 它的基本结构是 Be Have Has Did 等助动词 包括情态动词 主语 谓语 包括表语 回答常用简略回答 1 谓语动词是 be 动词 助动词 情态动词时 只要直接把这些词置于句首 句末改成问 号 eg There s something wrong with his bike 改成疑问句 wrong with his bike 2 谓语动词是行为动词时 必须在句首加上助动词 Do Does 三单 Did 过去式 加 上这些助动词后 句子中谓语动词必须用原形 eg 1 Edison built a science lab himself when he was ten 改成疑问句 Edison a science lab himself when he was ten 2 Those Japanese like Chinese food 改成疑问句 those Japanese Chinese food 注意注意 在把肯定句改成否定句或一般疑问句的时候 要注意句中是否有 already some something somebody 等词 如果有也必须进行改变 already 要改成 yet some something somebody 等分别改成 any anything anybody 等 另外 在改成 否定句的时候注意把 too 改成 either both 改成 neither all 改成 none 等 在改成一般疑问句的 时候 常常把第一人称 I we 改成第二人称 you B 特殊疑问句 以疑问代词或疑问副词开头 提出疑问的句子 它的基本结构是 特殊疑问词 一般疑问句语序 但是如果疑问词在句子中作主语或作主 语的定语 就用特殊疑问词 陈述句语序 常用的疑问词有 what who whom whose which when where how why 等 回答时针对问句中的代词和副词来回答 不用 yes 或 no 来回答 1 对指物名词或谓语动词提出疑问 疑问词用 what The twins were making a kite when their mother came in 划线提问 the twins when their mother came in Mrs Turner asked her son to buy some eggs for supper 划线提问 Mrs Turner ask her son 2 对名词前定语提出疑问 疑问词应用 which 而且必须和名词连用 I m going to take the shirt on the right 划线提问 are you going to take 3 对指人名词或代词提问用 who 作宾语时提问用 whom 4 对物主代词和名词所有格提问用 whose 5 对具体时间提出疑问 如 in the morning last Sunday 等 疑问词用 when 对具体几点钟 提问 疑问词应用 what time 6 对具体地点提出疑问 疑问词应用 where The pupils are having a picnic at the foot of the hill 划线提问 the pupils having a picnic 7 对表原因的从句提问 常见的有 because 引导的从句 疑问词应用 why Xiao Cheng didn t go to the farm with us because he was ill 划线提问 Xiao Cheng go to the farm with us 8 对方式或程度等提出疑问 用疑问词 How 9 对数量提出疑问 疑问词为 How many 要注意 how many 必须跟名词的复数形式 eg two hundred birds How many birds 10 对价格提出疑问 疑问词用 How much eg I paid fifty yuan for the sweater did you pay for the sweater 11 对时间长度提出疑问 疑问词应用 How long eg I ve worked in that factory for two years 划线提问 you worked in that factory 12 对时间频率 如 once a year twice a week 等提问 疑问词用 How often 13 对具体次数 如 once twice three times 等提问 疑问词用 How many times 14 对 in 一段时间提问 疑问词一般用 How soon eg Jane and her brother will finish the work in two hours 划线提问 Jane and her brother finish the work 15 对距离提出疑问 疑问词用 How far eg It s about two kilometres from here to the country 划线提问 from here to the country 16 另外 对日期 星期 天气等提出疑问 则分别用 What s the date What day is it 如果是过去时间 就用 was 代替 is What s the weather like 思考题 1 The worker s visited the factory already 改成否定句 一般疑问句 The worker the factory the worker the factory 2 Both of his parents are workers 改成否定句 of his parents a worker 3 He went to the park with his sister 划线提问 he go to the park 4 We really enjoyed working on the farm 划线提问 What you really enjoy 5 She writes to her parents once a week 划线提问 she write to her parents 6 Our P E teacher has been at this school since he came 划线提问 our P E teacher been at this school 三 时态 1 一般现在时 一般现在时的功能 1 表示事物或人物的特征 状态 如 The sky is blue 天空是蓝色的 2 表示经常性或习惯性的动作 如 I get up at six every day 我天天六点起床 3 表示客观现实 如 The earth goes around the sun 地球绕着太阳转 一般现在时的构成 1 be 动词 主语 be am is are 其它 如 I am a boy 我是一个男孩 2 行为动词 主语 行为动词 其它 如 We study English 我们学习英语 当主语为第三人称