外研社小学英语一年级起点四年级下知识点整理

1、英语(四年级下)主要知识点整理(例句都是课本中原句)1.祈使句：表示请求、命令、建议等的句子。祈使句不需要主语，谓语动词用原形,句子末尾一般用感叹号。eg: (1)Don t walk on the grass!(否定祈使句)(2) Let s make a newspaper!(肯定祈使句)2.一般现在时：经常发生的动作或状态(常与always, usually, often, sometimes, seldom, never, every day/week/year, on Sundays .连用)be动词的一般现在时：(比较简单)I am, We/You/They are, He/She

2、/It is , There is+ 单数名词或不可数名词，There are +复数名词eg: It La not beautiful, but ithelpful.(2)行为动词的一般现在时：(单数第三人称的变化是重点、易错点；助动词用 do, don t, does, doesn t)eg: (1)This machine cuts the potatoes.Does he live in New York?Fish live in the river and birds live in the tree. (*注意fish单数和复数写法一样，这里fish前面没有a,所以是复数形 式，后

3、面接谓语动词要用原形。另外，Sheep和deer单复数也是一样的 形式)一般过去时：表示过去发生的动作或状态（常与ago, yesterday,the day before yesterday, last week/year/month, once upon a time, one day, the next day, in 2016连用）be动词的一般过去时：I/He/She/It was,We/You/They were, There was+ 单数名词或不可数名词，There were +复数名词eg： Once upon a time, there was a boy.（讲故事常用说法

4、 ）（2）行为动词的一般过去时：（助动词用did, didn t）一般动词变化：构成法：1.动词原形+ed.如：look-looked.以e结尾的词+d.如：live-lived.以辅音字母+y结尾的词，改y为i,再加ed.如：study-studied, cry-cried.以重读闭音节或r音节结尾，末尾只有一个辅音字母的词， 双写这个辅音字母，再加ed. 如：clap-clapped, stop-stopped, prefer-preferred不规则动词变化：如 had, said, put, saw, got, ran, learnt（英式写法），bought, came, took,

5、 went 等eg1: The animals had a concert last week.eg2: The next day, the boy ran to the village again.eg3: What did he play yesterday?eg4: When did you get up last Sunday? I got up at 8 o clock.(4) Beijing is the capital of China.(2) Daming is_making_a_card for his father.一般将来时：表示还没有发生但将要发生的事情或动作(常与 t

6、omorrow, the day after tomorrow, next year/month/week, soon, in the future, in . minutes/hours/days连用)Be going to+ 动词原形：多表示即将发生，最近打算、计划、安排 好要做的事情，主观性较强(区分人称，be动词变化am, is, are) eg: She s going to visit Australia.Will+动词原形：多表示即将发生的动作或状态，不受主观因素影响 的单纯的将来，客观性较强(不区分人称，都用will)(*目前小学阶段对这两种形式区分并不明显，可以互换使用)eg

7、: We will go to the zoo on Sunday.在进行时：表示正在进行或发生的动作 (常与now, at present, at this moment 连用)Be动词+动词的现在分词(*区分人称，注意动词的现在分词构成的特殊情况)动词的现在分词构成法：(1) 一般规则:动词 +ing,如：work-working.(2)以 e 结尾的动词去掉 e 力口 ing.如：live-living, have-having.(3)以重读闭音节或r音节结尾，末尾只有一个辅音字母的词，双写这 个辅音 字母，再力口 ing. 如:swim-swimming, clap-clapping,

8、 refer-referring. 以ie结尾的重读开音节的词，改 ie为y,再加ing.如： die-dying.eg: (1) What happening now?(3) We are having a party.6.购物相关话题：(1) I want to buy a pen. It，s expensive/cheap.It costs one hundred and eighteen yuan.Who wants to buy it?.音乐演奏相关话题：(*演奏乐器前要加定冠词the )I played the piano yesterday.You re playingthe v

9、iolin for your father.My mum and dad played in the concert.In the end, everyone clapped.(*注意玩球类运动不能加定冠词the, eg:I played football yesterday.).时间相关话题：What s the time now?What time is it now?It s 2 o clock .Is it breakfast/lunch/dinner time now?The Chinese cartoon Shaolin Kids is on TV at 8 o clock.方向相关话题：Where is the library?It，s in th