There be 结构　　There be 结构主要用以表达某处(某时)有某人(某物),其基本句型为There be + 某物或某人 + 某地或某时,其中there 是引导词,没有词义;be是谓语动词;某人或某物是句子的主语;某地或某时作句子的状语,多是介词短语。
如: 　　There is a football under the chair.
椅子下面有一个足球。
　　主语是遥数名词或单数可数名词时用is, 是复数时用are。
如: 　　There is a flower in the bottle.
瓶里有一朵花。
　　There is some money in the purse.
遥包里有些遥。
　　2.
若句子中有几个并列的主语时,be的形式依据就近原则。
如: 　　There is a boy, a girl and two women in the house.
房子里有一个男孩,一个女孩和两个妇女。
　　There are ten students and a teacher in the office.
办公室里有十个学生和一个教师。
　　3.
另外,在陈述句中为了强调地点,也可将介词短语提置句首。
如: 　　In the tree there are five birds.
树上有五只鸟。
　　There be 结构的句型转换 　　否定句 　　there be的否定式通常在be后加not构成(在口语中be时常与not缩写在一起)。
如果句中有some,一般要变成any。
如: 　　There are some children in the picture.
→There aren't any children in the picture.
　　一般疑问句及其答语 　　把be提到there前,首字母大写,句末用问号即可。
其肯定答语是Yes, there is / are;否定答语为No, there isn't / aren't。
如: 　　—Are there two cats in the tree?
　　—Yes, there are.
(No, there aren't.
) 　　特殊疑问句及其回答 　　①提问句子的主语(包括主语前的修饰语)时,句型一律用what is + 地点介词短语?
(无论主语是单数还是复数都用is)。
如: 　　There are some birds in the tree.
→What's in the tree?
　　②就there be后面的地点状语进行提问时,句型用where is / are + 主语?
如: 　　There is a car in the street.
→Where is the car?
　　③提问可数名词(主语)前的数量时,用how many,句型结构为how many + 复数名词 + are there + 其它?
(主语无论是单数还是复数,be通常要用are)。
　　18、Is there •••?
Yes, there is.
/ No, there aren’t.
　　Is there a playground in the school?
　　19、Are there ••• ?
Yes, there are.
/No, there aren’t.
　　Are there any flowers in the garden?
　　20、Whose ••• is ••• ?
It’s •••.
　　Whose blouse is this?
It’s Mary’s blouse.
　　21、Whose blouses •••?
They’re •••.
　　Whose blouses are these?
They’re Mary’s blouses.
　　22、I ( don’t ) have •••.
I ( don’t ) have a fork.
　　You ( don’t ) have •••.
You ( don’t ) have a spoon.
　　We ( don’t ) have •••.
We ( don’t ) have two bowls.
　　They ( don’t ) have •••.
They ( don’t ) have two glasses.
　　23、Do you have •••?
Yes, I do.
Yes, we do.
/ No, I don’t.
No, we don’t.
　　Do you have a fork?
　　24、Do they have •••?
Yes, they do.
/No, they don’t.
　　Do they have a fork?
　　25、He / She has •••.
He / She has a new room.
　　He / She doesn’t have •••.
He /She doesn’t have a new room.
　　26、Does he /she have •••?
Yes, he /she does.
No, he/she doesn’t.
　　Does he/she have a radio?
　　27、How many ••• does ••• have?
He/She has •••.
　　How many sisters does Lucy have?
She has one.
　　28、How many ••• do ••• have?
I/We/They/You have •••.
　　How many sisters do you have?
I have two.