内容正文:
三年级下册语法集锦:there be 句型
一、there be句型解析。
1.there be句型表示“在某地有某物(或人)”。
2.在there be句型中,主语是单数,be动词用is;主语是复数,be动词用are;如有几件物品,be动词根据最靠近be动词的那个名词决定。例如:
(1)There is a pen on the desk.书桌上有一支钢笔。
(2) There are two books on the desk.书桌上有两本书。
(3) There is a pen and two books on the desk. 书桌上有一支钢笔和两本书。
(4)There are two books and a pen on the desk. 书桌上有两本书和一支钢笔。
3.there be句型要变成否定句时,在be动词后加not;一般疑问句则把be动词调到句首。例如:
(1)否定句:There is not a box on the table.饭桌上没有一个盒子。
疑问句:Is there a cat in the room?房间里有一只猫吗?
(2)否定句:There are not any oranges in the box.盒子里没有任何橘子。
疑问句:Are there any oranges in the box?盒子里有橘子吗?
4.some和any在there be句型中的运用:some用于肯定句;any用于否定句或疑问句。例如:
(1)There are some rulers in the pencil-box.(肯定句)
(2)There are not any rulers in the pencil-box.(否定句)
(3)Are there any rulers in the pencil-box?(疑问句)
5.and和or在there be句型中的运用:and用于肯定句,or用于否定句或疑问句。例如:
(1)There is a boy and a girl in the room.(肯定句)
(2)There aren’t any books or pencils on the desk.(否定句)
(3)Are there any chairs or stools in the house?(疑问句)
6.针对数量提问的特殊疑问句的基本结构是“How many+名词复数+are there+介词短语?”。例如:
How many books are there in your bag?你的书包里有多少本书?
二、there be(有)与have/has(有)的区别。
1.there be表示在某地有(存在)某物(或人);have(has)表示某人拥有某物。例如:
(1)There is a dog in the box.箱子里有一条狗。(某地有某物)
(2)I have a pencil.我有一支铅笔。(某人拥有某物)
2.在there be句型中,主语是单数,be动词用is;主语是复数,be动词用are;如有多件物品,be动词根据最靠近be动词的那个名词决定(如上面的例子)。在句子中含有have/has(有)的句型中,究竟是选用have还是has,则由作为主语的人称词决定。例如:
(1)I have a dog and a cat.我有一条狗和一只猫。
(2)She has two rabbits.她有两只兔子。
记忆口诀:I/we/you/they/复数+have
he/she/it/单数+has
专项练习
一、用“have/has”或“there is/there are”填空。
1.I_______________a good father and a good mother.
2._______________a pencil-box and two books on the desk.
3.He_______________a pretty dog.
4._______________a ball in the box.
5.She_______________some children.
6.They_______________a nice picture.
7.What do you_______________?
8._______________a toy on your bed?
9. What do these men_______________?
10._______________any books in the bag?
11.My father_______________a funny book.
12._____________