there be句型,否定句和疑问句,疑问句要解答,急There is a pen.There are two brothers.There is a post office.There are post office and bank.there is a schooc.

there be 句型讲究的是就近选择，以最接近be的单词的单复数来决定be是are或is
这个句子不难，不要有there have这种错误就行了

1. There is a pen.
There isn't a pen.
Is there a pen?
2.There are two brothers.
There aren't two brothers.
Are there two brothers?
3.There is a post office.
There isn't a post office.
Is there a post office?
***** 4.There are post office and bank.(这句话有点错吧，没有冠词啊)
There isn't a post office and a bank.(我按我改的句子写的,用单数，就进原则！！！)
Is there a post office and a bank?
5.There is a school.
There isn't a school.
Is there a school?
否定句就是在谓语动词后加not,疑问句就是将be动词和there调换位置，句子其余部分不用变化。如果有some的话，要变成any.

第四句话写的不对,所以不做解答.
否定句：
There isn't a pen.
There aren't two brothers.
There isn't a post office.
There isn't a school.
一般疑问句都是把be动词(is,are)提前,回答时如果要肯定回答就是Yes,there + 问句首词,如果否定回答就是No,there + 问句首词 + not：
--- Is there a pen?--- Yes,there is.或No,there isn't.

1. There is a pen.
There isn't a pen.
Is there a pen?
2.There are two brothers.
There aren't two brothers.
Are there two brothers?
3.There is a post office.
There isn't a post office.
Is there a post office?
4.There are post office and bank.(这句话有点错吧，没有冠词啊)
There aren't a post office and a bank.(我按我改的句子写的)
Are there a post office and a bank?
5.there is a school.
there isn't a school.
Is there a school?
否定句就是在谓语动词后加not,疑问句就是将be动词和there调换位置，句子其余部分不用变化。如果有some的话，要变成any.