小学英语语法：There be句型和havehas的区别与用法

小学英语语法句型和的区别与用法There behavehas

一、定义句型表示某处存在某物/某人♦There be如There isa book on the desk.某物某处翻译书桌上有一本书

二、句型结构+可数名词单数/不可数名词+其它.♦1There is+可数名词复数+其它.♦2There are即:be动词要与后面名词的数保持一致如There isa mapon thewall.There aretwo mapson thewall.当句中有两个或两个以上的名词时动词要与跟它最靠近的名词的数保持♦3,be一致,粽为就近原则如There aretwo boysand a girl under the tree.（最靠近动词）two boysbeThere isa girland twoboys underthe tree.（最靠近动词）agirlbe

三、句型转换否定句♦1在动词后加be noto如There isa bookon thedesk.一变否There isnot a bookon thedesk.缩写后变成There isnta bookon thedesk.注意肯定句中如含有在变成否定句时，要把变some,some any如There are some bookson thedesk.一变否:There arentany bookson thedesk.一般疑问句把动词调到句首，句号变问号♦2be如There isa bookon thedesk.一变疑Is therea bookon thedesk注意当句中含有时，变为疑问句时，要将变为some someany There aresome booksoon thedesk.一变疑Are thereany booksonthedesk＞特殊疑问句♦3对可数名词的数量进行提问，用How many如（对划线部分提问）There arefive peoplein the room.—How manypeople arethere in theroom

四、的用法have/has用于主语三单，用在主语非三单has have的第三人称单数形式是have has第三人称单数，简称三单符合三单的情况有:作主语时♦he/she/it单个人名/地名/称呼等作主语时♦可数名词单数作主语时♦the/this/that+不可数名词作主语时♦如He has a book.My motherhas abook.That cathas bigeyes.（主语符合三单）He/My mother/The catIhave abook.You have abook.They havesomebooks.（主语不符合三单）I/You/They注意♦助动词后加动词原形

1.do/does其中助动词用在主语三单，其它情况用

2.does do如Do youhave acarDoes hehave acarI donthave acar.He doesnthaveacar.

五、句型与的用法区别There behave/has结构不同■1名词+其它.There be+主语+其它.have/has+意义不同■2侧重表示存在there be侧重表示持有/拥有have/has两者不可混用■3x There is have....x Therehave are....试对比以下句子第一组Therearesome applesinthebox.盒子里有一些苹果We havesome apples.我们有一些苹果第二组Thereisa dogunderthedesk.书桌下有一只狗My motherhasadog.我妈妈有一只狗。