1、Unit8语法专项课件语法专项课件(There be句型)句型)初中英语人教版七年级下册初中英语人教版七年级下册there be句型定义there be 构成的句子称为“存在句”。此句型构成形式一般为“there be+某人/物+地点/时间”,意为:在某地有某物(或某人)。There is a cat under the tree.树底下有一只猫。There are two students in the classroom.教室里有两个学生。there be句型定义there be句型结构肯定句:there be+其他否定句:there be+not+其他疑问句:be+there+其他The
2、re is a bag on the desk.There isnt a bag on the desk.Is there a bag on the desk?there be句型结构“Whats+表示地点的介词短语”用there be句型来回答。Whats on the desk?There are 5 eggs on the desk.注意:询问的时候,be动词只能用单数is,而回答时需视情况而选用单复数。易错点1a.There is+单数可数名词不可数名词 There is a book on the desk.桌子上有一本书。There is some water in the bot
3、tle.瓶子里有些水。用法用法易错点1b.There are+复数名词There are some pictures on the wall.墙上有些图画。There are two apples in the basket.篮子里有两个苹果。用法用法易错点2There be句型的就近原则There be 就近原则:若句子中有几个并列主语时,be动词的形式要与离其最近的一个主语在人称和数上保持一致。1.There is a girl and two boys under the tree.2.There are two boys and a girl under the tree.易错点3ha
4、ve/has与主语是“所属关系”,强调的是“拥有,占有”。there be表示“存在关系”,强调某地“有”某物,(某地存在)There be与have的区别易错点3I have many friends.我有很多朋友。There is a book on the desk.桌子上有一本书。(拥有)(某地存在)【典例1】What_ on the shelf?There are some books.A.be B.am C.are D.is考查be动词。句意:架子上有什么?有几本书。What be+表示地点的介词短语提问,be动词只能用is。【典例2】Is there a garden in th
5、e yard?Yes,there is.And there _ beautiful flowers in it.A.is so much B.are so many C.is so many D.are so much考查there be句型。句意:院子里有一个花园吗?有,并且里边有很多漂亮的花。flowers为可数名词单数,选用are和many来限定,故答案选B。【典例3】There _ an eraser,two pencils and a knife in the box.A.are B.is C.have D.has考查there be句型。句意:盒子里有一个橡皮,两支铅笔,一个小刀。“某地有某物”选用there be句型;根据“就近原则”,an eraser为单数,选择is。