资源描述
年 级
三年级
学 科
英语
版 本
人教新课标版
课程标题
寒假专题——be动词用法和祈使句
编稿老师
一校
林卉
二校
李秀卿
审核
崔小芳
一、学习目标:
1. Be动词:am, is, are
2. 祈使句
二、重点、难点:
1. 正确使用be动词am, is, are。
2. 明确祈使句的概念并掌握其常见的句型结构。
三、考情分析:
近年来,小学三年级英语试题对be动词和祈使句的考查主要集中以下两方面:
1. 正确使用be动词:am, is, are。
2. 熟练使用祈使句。
四、知能提升:
(一)知识讲解
I. Be动词
1. 分类:英语中be动词的一般现在式有三个,分别是:am,is,are .
2. 用法:am和主语I(我)连用。is用于he(他), she(她), it(它)和主语是单数的句子当中。are用于we(我们), you(你们), they(他们)和主语是复数的句子中。
例:
I am a student.
He’s a postman. She isn’t my English teacher .
Tom and I are the same age.
Where is my dress? Here it is.
Where are my shoes? Here they are.
We are both tall.
You are tall, too.
小结:be动词用法结构图:
(否)aren’t
be 动词用法歌诀:
Be 动词,兄弟仨,am, is, 还有are 。
我(I)用am ,你(you)用are ,is用于他(he), 她(she), 它(it) 。
单数名词用is, 复数名词都用are 。
【考题链接】
1. Hello! Here _____an orange for you !
A. am B. is C. are
答案:B
思路分析:主语an orange是单数形式。
2. My books _____ very useful .
A. am B. is C. are
答案:C
思路分析:主语My books是复数形式。
3. I have two pens. They ____ new. One ____ green and the other _____ blue .
A. am, is ,am B. is, are, is C. are, is, is
答案:C
思路分析:主语they是复数形式。One 是单数形式,the other 意为“另一个”,也是单数形式。
II. 祈使句
<一>定义:祈使句表示请求、命令、建议等。谓语动词一律用原形。句子中通常不用主语,句末用惊叹号或句号,用降调来读。
<二>分类:肯定的祈使句和否定的祈使句.
1. 肯定的祈使句
a. 句型:动词原形~.(省略主语)
Stand up.起立。Be quiet,please.请安静。
比较 陈述句:You sit down.你坐下来。祈使句:Sit down.坐下。(省略主语you)
注意:有时,为了加强语气,可在动词之前加do。
Do sit down.务必请坐。Do study hard.一定要努力学习。
b. 用客气的语气表示祈使句时,可在句首或句尾加上please,但如果在句尾加please,那在please之前一定要加一个逗号“,”。
Come this way,please.请这边走。
注意:祈使句中如果有呼唤语,一定要用逗号“,”隔开,呼唤语可出现在句首或句尾。
Li Ming,come here.李明,过来。Come here,Li Ming.过来,李明。
c. 含有第一、第三人称主语的祈使句
Let's say good-bye here.我们在此道别吧。Don't let him do that again.别让他再那么做了。
句型:Let+第一人称(me,us)~.
Let+第三人称代词(宾格:him,her,it,them)或名词~.
Let's go at once.咱们马上动身吧。
Let me try again.让我再试试。
Let Tom go there himself.让汤姆自己去那儿。
注意:
Let's包括听话者,Let us不包括听话者。用于反意疑问句时最明显。
Let's go,shall we?咱们去吧,怎么样?
Let us help you,will you?让我们帮帮你,好吗?
2. 否定的祈使句
句型a:Don't +动词原形~
Don't swim in the river.别在河里游泳。
Don't be late.别迟到。
Please don't be noisy.请不要大声喧哗。
注意:
表示禁止时,尤其是标语等也可用“No+名词/动名词”的形式来表示。
No smoking!禁止吸烟!
No parking!禁止停车!
No litter!不准乱扔杂物!
句型b:Let's(us,me)+not +动词原形~.
Don't let +第三人称代词的宾格或名词+动词原形.
Let's not say anything about it.
对于这件事,咱们什么也不要说。
Don't let them play with fire.
别让他们玩火。
【易错点】
1. be 动词的缩写形式:
I am =I'm he is =he's it is = it's she is = she's you are=you're we are = we're
they are = they're is not =isn't are not = aren't
* am not 没有缩写形式.I'm不能用在句末。*
2. 祈使句的回答:
回答祈使句时,应该说“OK./ All right./ Great./Good idea.”(好的,好吧,好极了)
决不能用“That's OK./ That's all right .”(没关系)
如:—Let's fly it .—Great !
—Show me your ruler .—All right .
【考题链接】
1. ________ the duck yellow .
A. colour B. Colour C. Colours
答案:B
思路分析:"colour"作动词时意为“给……涂色”;作名词时意为“颜色”。祈使句需以动词原形开头且首字母要大写。
2. ___________draw a monkey .
A. Let B. Lets C. Let's
答案:C
思路分析:“Let's”是Let us 的缩写形式。意为“让我们……”“Let us +动词原形”构成祈使句。
3. —Are you a student ? —Yes, ______.
A. I are B. I am C. I'm
答案:B
思路分析:I 必须与am 连用,但I'm不能用在句末。
4. Everyone _____here today .
A. am B. is C. are
答案:B
思路分析:主语是复合不定代词时,谓语动词用单数。
5. —_____this your chair ? —Yes , it is.
A. Am B. Are C. Is
答案:C
思路分析:"this "意为“这个”,是单数。主语是单数时,谓语动词须用单数。
(二)即学即练
Ⅰ. 用“am , is , are ”填空:
1. This____ my mouth .
2. How ____you ?
3. What______ your name ?
4. Mr Wang _____ a good teacher .
5. My shoes ______very beautiful .
6. _____that your brother ?
7. Everything ____ OK .
8. I _____ tall and thin.
II. 连词成句。(注意大小写及标点符号)
1. are, how , you (?) ____________________ ____
2. show , me , your, pencil-box( .) ___________________
3. at, my , train , look(. ) ___________ ___ _____
4. Let, me, a , look, have (. ) _____________________
5. colour, pink , it , and, blue (. ) ______________________
下册Unit 1 Let's go to school . L1-L2
一、预习新知
下节课的主要内容,包括
单词:classroom school storybook water bottle;
句型:Let’s go to school .
Nice to see you again .
Look! I have a new...
Can I see it ?
Sure .Here you are .
二、预习点拨
思考问题一:新学期开始了,见到同学们你知道该说些什么吗?
思考问题二:同学们知道怎样用英语说“学校,教室,故事书和水瓶”吗?
(答题时间:30分钟)
Ⅰ. 用“am , is , are ”填空:
Hello! My friends. How___ you? Now, I will talk about my family and me. There ____four people in my family. They ____ my father, my mother, my little brother and I. My father ___ a doctor. My mother ____ a teacher. My brother ___only 3 years old. He ___lovely.(可爱的) .I ____ 10 years old now. I____ in Class1, Grade 3.I love my family .
II. 单项选择:
( ) 1. ____ it pink and blue .
A. Look B. Colour C. Is
( ) 2. ______ draw an egg.
A. Let B. Lets C. Let’s
( ) 3. ____ some rice, please .
A. have B. Have C. Drink
( ) 4.Here_____ a pear for you .
A. are B. am C. is
( ) 5. Here you _____ .
A. am B. is C. are
( ) 6. We ___ all here today.
A. am B. is C. are
( ) 7. _____make any noise .
A. Don't B. Not C. Can
( ) 8. I like my house. It____ big .
A. am B. is C. are
( ) 9. —What _____this, Li Yan? —____elephant.
A. is, A B. are, A C. is, An
( ) 10. —Is that ____ eraser? —Yes, it____ .
A. a, is B. an, is C. an, isn't
Ⅰ. 用“am , is , are ”填空:
Hello! My friends. How __are_ you? Now, I will talk about my family and me. There are four people in my family. They are my father, my mother, my little brother and I. My father is a doctor. My mother_ is a teacher. My brother is only 3 years old. He is lovely.(可爱的) .I am 10 years old now. I am in Class1, Grade 3.I love my family .
II. 单项选择:
( B ) 1. ____ it pink and blue .
A. Look B. Colour C. Is
( C ) 2. ______ draw an egg.
A. Let B. Lets C. Let’s
( B ) 3. ____ some rice, please .
A. have B. Have C. Drink
( C ) 4. Here_____ a pear for you .
A. are B. am C. is
( C ) 5. Here you _____ .
A. am B. is C. are
( C ) 6. We ___ all here today.
A. am B. is C. are
( A ) 7. _____make any noise .
A. Don't B. Not C. Can
( B ) 8. I like my house. It____ big . .
A. am B. is C. are
( C ) 9. —What _____this, Li Yan? —____elephant.
A. is, A B. are, A C. is, An
( B ) 10. —Is that ____ eraser? —Yes, it____ .
A. a, is B. an, is C. an, isn't
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