1、三年级上册重要易错语法知识点一一.哪些情况需要用到字母的大写形式哪些情况需要用到字母的大写形式1. 所有句子的开头的第一个单词的第一个字母都要大写。( )Look,_ is my friend, Sam. A it B This C this( )Look!_ is me. A this B This C He2.人物的姓和名开头的第一个字母要大写。(Yang Ling/ Zhu Linlin)3.特殊节日,称呼,Happy New Year Miss Li, Uncle John 二. 关于完整形式和缩写形式Im= I am(我是) youre = you are(你是) hes= he i
2、s(他是) shes= she is(她是) its = it is(它是) whats =what is(是什么) thats= that is(那是) who is =whos (是谁) is not =isnt (不是)Yes, I am. 不能用不能用Yes, Im.(缩写)(缩写)人称代词人称代词I (我) , we(我们) 主格主格you (你) he(他), she (她) ,it (它),they(他们),宾格宾格 me三三. 关于人称代词和物主代词关于人称代词和物主代词my(我的) your (你的) his (他的) her(她的) our (我们的)物主代词物主代词1.T
3、his is(my / I)mother.2. Nice to meet (your / you).3. Whats(you / your)name?4. Are(your / you)Miss Li?5. (I / My)am Ben.6. (She / Her)is my sister.圈出正确的那个词圈出正确的那个词用所给代词的正确形式填空。1. Is this _ (you ) brother?2. That is _( she ) sister.3. Tom, this is _ ( me ) cousin .hermyyour四、Look!.和Look at .的区别。look 是
4、一个动词,意思是看啊!如:Look, this is a lovely monkey.look at 是一个词组,表示看什么东西,后面一定要加看的具体事物,如:Look at my cap. ( )1. _, its a nice skirt. A look B look at C Look( )2. _ this new cap. A look B look at C Look atCC 五 用Its ./How ! 对所看到的物品进行赞美。例:Its nice/new/great.How nice/new/great!( )- Look at my new jacket. - _ nice
5、! A how B its C How( )- Look at my new skirt. - _nice. A How B its C ItsHow 引导感叹句like是一个单词,翻译成喜欢would like 是一个词组,翻译成想要Do you like.? 你喜欢.吗? 回答可以是 Yes, I do.No ,I dont. Would you like 你想要.吗? 回答可以是 Yes,please. No, thank you.六 like与would like区别1. _you like an ice cream? Yes ,please.A. Would B Do2. _you
6、like toys? No, I dont.A. Would B DoWouldDo be动词翻译成是动词翻译成是,以以am, is, are的形式出现。的形式出现。 建议用歌谣熟记建议用歌谣熟记be的用法的用法: 我(我(I)用用am, 你你(you)用用are,is用在他、用在他、(he)她她(she)、它、它(it); 单数单数is复数复数are, , 学好英语就靠它。学好英语就靠它。七七.Be动词动词的用法的用法be动词动词的的种类种类。第一人第一人称单数称单数(I)配合配合am来来用。用。句型句型解析解析析:析:I am+I am smart .I am ten years old.
7、 I am a student. I am a boy.be动词动词的的种类种类第二人称(You)配合are使用。句型解析:You are+You are my good friend. You are a good boy.You are beautiful.be动词动词的的种类种类第三人称单数(He or She or It)配合is使用。句型解析:She(He, It) is +She is a good girl.It is nice.He is a teacher.be动词动词的的种类种类人人称复数称复数 (we /you/they)配合配合are使用。使用。句型解析:句型解析:We
8、 (You, They) are +We are in Class 5,Grade 7.They are my friends.You are good students.综合解析综合解析当使用当使用be动词的时候,前面请先加上第几人动词的时候,前面请先加上第几人称。称。be动词前面的人称,是不可随意替换的。动词前面的人称,是不可随意替换的。例如:例如:I am, You are, She is,并不会出现并不会出现I is, You am, She are 这样的情形这样的情形。一、用一、用be动词的适当形式填空动词的适当形式填空1. Amy _ my sister.2. He _ ten
9、.3. -What _ your name? -I _ Helen.4. - _ you Mike? 5. It _ nice.5. What colour _ your jacket?6. They_friends.7.You and I _ good friends.isisamAreisisareisare八八.a与与an的用法的用法a和an都是冠词,a一般意为一,an也是这个意思,an只是用于元音开头的单词前。目前接触过的元音字母有a,e,i,o,u用a或an填空_ cap_ egg_apple_ orange_nice ice cream _ice cream_red egg _green orangeaanananaanaa