PEP五六年级英语的重点句型.比如There be句型什么情况下用am/is/are.（要全.）

There be的句型只有There are或者There is，没有There am的情况.There is用于加都是=1的单词。There is 也可以用于加=1的单词和>1的单词。如：There is a door, a window and a computer in my room.和There is a door and two chairs in my room.这两句话都用了There is,都是正确的句子。There are用于加都是>1的单词。There are也可以用于加>1的单词和=1的单词。如：There are two boys and two girls in the classroom.和There are two boys and a woman in the classroom.这两句话都用了There are,都是正确。
区分得用There is还是There are,就得看离它们最近的单词的数量是等于1还是大于1，等于1就用There is,大于1就用There are。像上边的句子：There is a door,a window and a computer in my room.和There is a door and two chairs in my room.这两个句子，离There最近的单词都是a door，都等于1，所以用There is。而句子There are two boys and two girls in the classroom.和There are two boys and a woman in the classroom.这两个句子，离There最近的单词都是two boys，都大于1，所以就用There are。

There is/are表示某处有某物,there is +可数名词单数,或不可数名词如：there is a book on the desk.there is a book and two pens on the desk.(就近原则) there is water in the glass,There are+可数名词复数.there are books on the desk.
或表示时间的包含关系there are seven days in a week.很简单的,