四年级下英语知识点归纳
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英语知识点归纳
一）．能按顺序规范默写26个字母
二）．背诵课本上的单词和每模块第一单元活动2重点句子
三）、在英语中表示“两者之间的比较”时，形容词要用比较级形式。
A. 形容词的比较级构成规则
1. 一般在形容词词尾加er
原级比较级原级比较级
young younger long longer
old older tall taller
strong stronger short shorter
2. 以e结尾的词直接加r
nice---nicer
3. 有些形容词双写最后一个字母再加er
big---bigger thin---thinner hot---hotter
fat ---fatter wet---wetter
4. 以辅音字母加y结尾的词，变y 为i再加er
busy---busier easy---easier heavy---heavier
5. 有些形容词在词前加more构成比较级
difficult---more difficult interesting---more interesting
dangerous ---more dangerous beautiful ---more beautiful B. 不规则变化
good--- better bad--- worse many/ much--- more C. 比较级句型中常用than 进行比较
如：Circle A is bigger than Circle B. 圆A 比圆B大
Lingling is better than Daming.
Amy is taller than Lingling.
四）、人称代词包括主格和宾格。主格在句中作主语，宾格用于动词
We are going to have a picnic. Let us go.
I miss everyone in China. Who can help me?
What is he doing? He is trying to get on the bus. Look at
him.
She can’t hear. This dog helps her.
Tell me more about the Great Wall.
五）．物主代词
物主代词包括形容词性物主代词和名词性物主代词。
形容词性物主代词后需跟名词，名词性物主代词后不用跟。
This is my book. = This book is mine.
This is his bag. = This bag is his.
Your watch is old, but hers is new.
Thanksgiving is my favourite festival.
We say “Thank you” for our food, family and friends.
六）．时态
1.一般过去时表示过去某个时间发生的动作或存在的状态。经常
与表示过去的时间连用。如yesterday（昨天）, last week（上周）, last month（上个月）, last year（去年）, two months ago（两个月前）等。
构成：(1)肯定句：主语+动词过去式+ ……
He made a video.
否定句：主语+didn't +动词原形+ ……
He didn’t make a video.
一般疑问句：Did +主语+动词原形+ …….?
Did he make a video?
(2) be动词用was, were . 否定句在was, were后加not. 一
般疑问句把was, were提前到句首。
She was born in America.
She was not born in America.
Was she born in America?
2. 现在进行时表示现在正在进行的动作
构成：主语+am /is / are+ 现在分词+……
The birds are singing in the trees.
否定句在am /is / are后加not.
The birds are not singing in the trees.
一般疑问句把am /is / are提前到句首。
Are the birds singing in the trees?
3.一般将来时表示将来某个时间要发生的动作或存在的状态。经常与表示将来的时间连用。如tomorrow (明天), next week（下周）, next year（明年）等。
构成：(1) 主语+ will + 动词原形+……
He will pick up the apples.
否定句在will后加not.
He will not pick up the apples.
一般疑问句把will提前到句首。
Will he pick up the apples?
(2) 主语+ be going to + 动词原形+……
We are going to study French.
否定句在am /is / are后加not.
We are not going to study French.
一般疑问句把am /is / are提前到句首。
Are you going to study French?
4. 一般现在时表示经常性，习惯性的动作或存在的状态。
构成：（1）主语+am /is / are+……
否定句在am /is / are后加not. 一般疑问句把am /is / are
提前到句首。
Helen Keller is a model for blind people and for you and
me.
(2) 肯定句：主语+动词原形+ ……
The ducks like it.
否定句：主语+don't +动词原形+ ……
The ducks don’t like it.