小学三年级英语语法总结

　　(四) 单数句和复数句：

　　口诀： 单数句子变，变化规则要记住。

　　名词代词要变化，am, is要变are。

　　this, that变成啥，these, those来替它。

　　he, she, it要变啥，全部变they不用怕。

　　I要变we莫落下，名词后面把s/es加。

　　名前冠词去掉它，其余成分原样加。

　　具体注意下面的六要素：

　　1.单数主格人称代词要变成相应的复数主格人称代词，即I→we; you→you; she, he, it→they。 如： She is a girl.→They are girls.

　　2. am, is要变为are。 如： I'm a student. →We are students.

　　3.不定冠词a, an要去掉。如： He is a boy. →They are boys.

　　4.普通单数名词要变为复数形式。如： It is a cat. →They are cats.

　　5.指示代词this, that要变为these, those。如： This is a book.→These are books.

　　6. man, woman作定语修饰可数名词时，要在 "数"上与被修饰名词保持一致。但其他名词修饰名词表示 "性质"时，不作变化。如：

　　He is a man doctor.→They are men doctors.

　　This is an apple tree.→They are apple trees.

　　单复数相互转换，每空一词(含缩写)。

　　1. The woman is a nurse.(改为复数句)

　　The _________ _________ _________.

　　2. There are some old cars.(改为单数句)

　　There _________ _________ old _________.

　　3. He has a new book.(改为复数句)

　　_________ _________ new _________.

　　4. Are these your chicks ?(改为单数句)

　　_______ _______ your _______?

　　5. Is there a sheep in the playground?(改为复数句)

　　________ there ________ ________ in the playground?

　　(五)一般疑问句及特殊疑问句

　　句子基本是：简单陈述句，由简单陈述句转变成肯定句，否定句，疑问句。疑问句是用来提出问题。英语中有四种疑问句: 一般疑问句、特殊疑问句、选择疑问句和反意疑问句。我们现在已经接触到了前两种疑问句。后两种疑问句以后我们还会学到.

　　一.一般疑问句：

　　英语中要用 yes和no 来回答的疑问句叫一般疑问句。如:

　　1)Is it hot ?　Yes, it is .\No, it isn't. -- be动词引导

　　2)Is it a car ?　Yes, it is .\No, it isn't . -- be动词引导

　　3)Is this your ruler ?　Yes, it is .\No, it isn't . -- be动词引导

　　4)Do you like bananas ? -- 含实义动词

　　Yes, I like bananas. \ No, I don't like bananas.

　　5)Can Ming hear a drill ? --含情态动词

　　Yes , Ming can hear a drill.\No,Ming can't hear a drill.

　　.陈述句(肯定句，否定句，一般疑问句)的转变规律：

　　1.肯定句： 2.否定句： 3. 一般疑问句及肯否定回答

　　1) 主语+be动词+…. 1) 主语+be动词+not+…. 1)be动词+主语+…?

　　Yes, 主语+be动词./

　　No, 主语+be动词+not.

　　I am a teacher. I am not a teacher. Are you a teacher?

　　--Yes, I am./ No, I am not.

　　My mother is thin. My mother is not /isn't thin. Is your mother thin?

　　--Yes, she is./ No, she isn't.

　　They are insects. They are not/aren't insects. Are they insects?

　　--Yes. they are./ No, they aren't.

　　2) 主语+情态动词can+… 2) 主语+情态动词can+ not+…. 2)情态动词can+主语+…?

　　Yes, 主语+情态动词can/

　　No,主语+情态动词can+ not

　　He can jump. He can not/can't jump. Can he jump?

　　--Yes,he can./ No, he can't.

　　3) 主语+动词+…. 3) 主语+助动词do/does+not 3) 助动词do/does+主语

　　+…. 动词原形 +….动词原形?

　　Yes, 主语+助动词do/does.

　　No, 主语+助动词do/does+not.

　　He likes to eat apples. He doesn't like to eat apples. Does he like to eat apples?

　　Yes，he does./ No，he doesn't.

　　We like to eat apples. We don't like to eat apples. Do you like to eat apples?

　　Yes，we do. /No，we don't.

　　二. 祈使句：表示请求、命令、建议或劝告等的句子叫祈使句，主语you常省略。

　　1、肯定形式：一般以动词原形开头。 Open the door, please.

　　2、否定形式：在句首谓语动词前加Don't。 Don't be late for class.

　　三 特殊疑问句(又叫wh-question)

　　用特殊疑问词来提出问题的疑问句叫作特殊疑问句。特殊疑问词一般要放在句首。常用的疑问词有what who ，which how 等这些词都以wh 开头(包括how)所以也叫作wh-question。特殊疑问句要求回答具体内容。不能用yes或no回答。结构：疑问词+一般疑问句。回答不能用yes / no(或相当于yes / no)回答的问句。答句的句式同肯定句句式：如：

　　What can you see ?　I can see a cat.

　　What can you hear ?　I can hear a bus.

　　What can you do ?　I can sing and dance.

　　What is it ?　 It's a panda.

　　What do you like ?　I like playing football

　　How old are you ?　I'm ten.

　　一.将下列句子变成一般疑问句

　　1 Mr Wang is thirsty　__________________________?

　　2.The elephent's ears are long　__________________________?

　　3. We like birds　_________________________?

　　4.Hello.You are his mother　__________________________?

　　5.I can sing and dance.　___________________________?

　　二 将下列每组词各组成一句特殊疑问句

　　1.(you are how). _________________________?.

　　2.(old how Ben is)_________________________?

　　3.colour is what your shirt_________________________?

　　4.(can see what the on you desk ) ________________________?

　　5.(like what do you)_________________________?

　　答案：一.1. Is Mr Wang thirsty?　2. Are the elephent's ears long　3. Do you like birds?　4.Hello. Are you his mother?　5.Can you sing and dance?

　　二.1. How are you?　2.How old is Ben ?　3.What colour is your shirt?　4.What can you see on the desk?　5.What do you like?

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