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小学英语There be句型和have-has的区别与用法

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There be 句型 & have/has 知识精讲
一、定义
There be /
There is a book on the desk.
二、句型结构
1> There is + / + .
2> There are + + .
be
There is a map on the wall.
There are two maps on the wall.
3> be
There are two boys and a girl under the tree.
(two boys be )
There is a girl and two boys under the tree.
(a girl be )
三、句型转换
1>
be not
There is a book on the desk.
There is not a book on the desk.
There isn't a book on the desk.
some some any
There are some books on the desk.
There aren't any books on the desk.
2>
be
There is a book on the desk.
Is there a book on the desk?
some some any
There are some books on the desk.
Are there any books on the desk?
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  There be句型 & have/has 知识精讲   一、定义 ★  There be句型 表示某处存在某物/某人。 如:There is a book   on the desk . 翻译:书桌上有一本书。 二、句型结构 ◆ 1> There  is +可数名词单数/不可数名词 + 其它. ◆ 2> There  are +可数名词复数  +其它. 即:be动词要与后面名词的数保持一致 。 如: There is a map on the wall. There are two maps on the wall. ◆ 3> 当句中有两个或两个以上的名词时,be动词要与 跟它最靠近的名词的数保持一致 ,称为 就近原则 。 如: There  are   two boys  and a girl under the tree.  (two boys 最靠近be动词) There  is   a girl  and two boys under the tree.  (a girl 最靠近be动词) 三、句型转换 ■1> 否定句: 在be动词后加not。 如: There  is  a book on the desk. →变否:There is   not  a book on the desk. 缩写后变成:There isn't  a book on the desk. 注意: 肯定句中如含有some,在变成否定句时,要把some变any 如:    There  are   some  books on the desk. →变否:There aren't   any  books on the desk. ■2> 一般疑问句: 把be动词调到句首,句号变问号。 如:    There   is  a book on the desk . →变疑: Is   there  a book on the desk ? 注意: 当句中含有some时,变为疑问句时,要将some变为any。 There   are   some  books on the desk. →变疑: Are   there   any  books on the desk? ■3> 特殊疑问句 对可数名词的数量进行提问,用 How many 如: There are  five  people in the room.(对划线部分提问) → How many  people are there in the room? 四、have/has的用法 has用于主语三单,have用在主语非三单。 have的第三人称单数形式是:has。 第三人称单数,简称三单。符合三单的情况有: ◆  he/she/it作主语时 ◆  单个人名/地名/称呼等作主语时 ◆  the/this/that+可数名词单数作主语时 ◆  不可数名词作主语时 如: He  has  a book. My mother  has  a book. That cat  has  big eyes. (主语He/My mother/The cat符合三单) I  have  a book. You  have  a book. They  have  some books. (主语I/You/They不符合三单) ◆  注意: 1. 助动词do/does后加动词原形 2. 其中助动词does用在主语三单,其它情况用do 如: Do  you  have  a car? Does  he  have  a car? I  don’t  have  a car. He  doesn’t  have  a car. 五、There be句型与have/has的用法区别 ■1
小学英语There be句型和have-has的区别与用法