7上Unit1Grammar课件

1、 Unit 1 This is me!Unit 1 This is me! Look at the sentences and find the rules of simple present tense. I am a student. 描述客观事实描述客观事实 I am from China. 我来自中国。我来自中国。 描述目前的事实。描述目前的事实。 Sandy is my classmate. He is 12 years old. 他十二岁。他十二岁。 描述现在的状态。描述现在的状态。 We are in class 1. We are very happy. 我们非常高兴。我们非常

2、高兴。 英语句子的时态是指句中谓语动词在英语句子的时态是指句中谓语动词在 不同的时间和状况下所使用的某种动不同的时间和状况下所使用的某种动 词形式。词形式。 We use the simple present tense when We use the simple present tense when we talk about facts and states.we talk about facts and states. 我们常使用一般现在时描述客观事实、目我们常使用一般现在时描述客观事实、目 前的事实和现在的状态。前的事实和现在的状态。 He is from Nanjing. 他从南京

3、来。他从南京来。 Lee is my friend. 李是我的朋友。李是我的朋友。 My hair is long. 我是长头发。我是长头发。 注意注意 主语可以是人称代词，也可以是名词，动主语可以是人称代词，也可以是名词，动 词词be的选择要与主语相一致。的选择要与主语相一致。 The dog is very lovely. 这只小狗很可爱。这只小狗很可爱。 These apples are big and red. 这些苹果又大又红。这些苹果又大又红。 “ be ”动词的一般现在时形式有三种动词的一般现在时形式有三种：am, is , are。 be动词用法口诀：动词用法口诀： “我我(I

4、)”用用am , “你你(you)”用用are, “is用于用于“他他(he)”、“她她(she)”、“它它(it)”, 复数人称都用复数人称都用“are”。 如果主语是代词，动词如果主语是代词，动词be与前面主语在与前面主语在 一起时，在非正式行文中可以缩写。如：一起时，在非正式行文中可以缩写。如： I am = Im You are = YoureI am = Im You are = Youre She is = Shes He is = Hes She is = Shes He is = Hes It is = Its We are = Were It is = Its We are

5、= Were They are = Theyre They are = Theyre be 用法如下：用法如下： 一般现在时一般现在时be动词在肯定句中的用法动词在肯定句中的用法 I am 或或 Im happy You/We/They are或或 Youre/Were/Theyre He/She/It is 或或 Hes /Shes /Its 例句：例句： 1. I am a teacher. 2. You are students. 3. We are good friends. 4. They are on the football field. 5. Simon and Sandy a

6、re classmates. 6. He is a polite and helpful boy. 7. It is an e-dog. 8. Sandy is tall and slim. 9. Her hair is long. 一般现在时一般现在时be动词的否定句动词的否定句 I am not或或 Im not happy You/ We / They are not 或或 You / We / They arent He / She / It is not 或或 He / She / It isnt 动词动词be一般现在时的否定句是在一般现在时的否定句是在be后面加后面加 not构成。

7、动词构成。动词be与与not可以缩写，如：可以缩写，如： is not = isnt; are not = arent。 一般现在时一般现在时be动词的动词的 一般疑问句及其肯定答一般疑问句及其肯定答 AmI happy? Yes, Iam. Are you/we /they you/ we/ they are. Ishe/she /it he/she/it is. 动词动词be一般现在时的一般疑问句是将一般现在时的一般疑问句是将be提提 前于句首构成。前于句首构成。 一般疑问句的否定回答一般疑问句的否定回答 No, I am not或或 Im not happy. you/we/they a

8、re not或或 arent he/she/it is not 或或 isnt 缩写形式小结：缩写形式小结： Im = I am youre/were/theyre = you/ we/ they are hes/shes/ its = he/ she/ it is isnt = is not arent = are not 例句：例句： (一一) be 动词一般现在时的否定句动词一般现在时的否定句: 1. I am not a student. 2. You arent good at swimming. 3. Simon isnt tall. (二二) 一般疑问句及其肯定回答和否定回答一般

9、疑问句及其肯定回答和否定回答 1. Am I the teacher? Yes, you are. No, you arent. 2. Are you good at English? Yes, I am. / Yes, we are. No, Im not. / No, we arent. 3. Is Simon tall? Yes, he is. No, he isnt. 将下列句子变成将下列句子变成 (1) 一般疑问句并作肯定和否定回答一般疑问句并作肯定和否定回答; (2) 变成否定句。变成否定句。 We are good friends. (1) Are you good friend

10、s? Yes, we are. / No, we arent. (2) We arent good friends. Simon and Sandy are classmates. (1) Are Simon and Sandy classmates? Yes, they are. / No, they arent. (2) Simon and Sandy arent classmates. Her hair is long. (1) Is her hair long? Yes, it is. / No, it isnt. (2) Her hair isnt long. Millie is t

11、alking to her new friends. Complete their conversation with the correct forms of the verb to be. Millie: Hi, Sandy. Our school _ big. Sandy: Yes, it _. The classrooms _ big too. Simon: Our teachers _ nice. Mr Wu _ a good teacher. is is is isareare areare is is Sandy: _ he our Chinese teacher? Millie: No, he _. He _ our English teacher. Simon: _ you goo