动词be常见的形式有以下几种：
1. 动词be在各种时态中的形式：目前时am，is，are；过去时was1，were；以后时will / shall2 be，would / should be或am/ is / are going3 to be，was / were going to be；完成时have / has / had4 been；
2. 与情态动词连用，构成there +情态动词+ be的形式；
3. 与seem，appear，used6 to等表示状况的词汇连用，构成there seem5（s） / appear（s）/ used to be；
4. There be句式中的be有时用come，enter，follow，arrive，seem，happen等动词代替，但不可以用have代替。比如：
There happened to be nobody8 in the room.
碰巧那时房间里无人。
［考试试题甄选］
1）There _________ many new words in Lesson One. It is very easy.
A. is B. aren't C. isn't D. are
（2005年南通）
2）There is some milk in the glass.（改为否定句）
There _________ _________ milk in the glass.
（2005年四川）
3）There _________ a knife and a fork on the table.
A. seems7 to be B. seem to be
C. is seeming9 to be D. are
（2005年黄冈）
［简析］第1）题中的It is very easy表明第一课比较容易，缘由当然是生词不多，故答案为B.第2）题的题干为一定句，改为否定句时，应将is变为isn't，some变为any，故空白处应分别填isn't和any.第3）题依据题干和四个选项可知，该句是一定句，又依据主谓语一致原则中的临近原则，谓语动词该用seems to be，故答案为A.
考试知识点2、动词be与主语的一致关系
动词be的形式要和最挨近它的主语在数上维持一致；另外，还需要注意不可数名词用作主语时，动词be应用单数形式。
［考试试题甄选］
1）图书馆前有很多小树。
There _________ many young trees in _________ of the library.
（2005年长沙）
2）-_________ there _________ for me in the bus？
-No，it's crowded10.
A. Is，a room B. Are，any room
C. Are，rooms D. Is，any room
（2005年漳州）
3）-What's on the desk？
-There _________ a dictionary11 and two notebooks on it.
A. is B. have C. are D. has
（2005年岳阳）
［简析］第1）题中的主语trees为可数名词复数形式，所以，第一空应填are；在前面应用in front of，所以，第二空应填front.第2）题的题干问的是公共汽车是不是还有空间，room用作不可数名词时，可表示空间的意思，如此，第一空应填is，故答案为D.第3）题依据主谓语一致原则中的临近原则，谓语动词应为is，故答案为A.
考试知识点3、There be与have有什么区别
There be句式和have均可表示有些意思，但使用方法有别。There be表示在某处有，意为存在有；而have却表示某人/某物有，意为某人/某物拥有。
［考试试题甄选］
1）-There _________ a concert12 this evening.
-Yeah. Exciting news13！
A. are going to be B. is going to be
C. is going to have D. will have
（2005年福州）
2）There _________ a football game between Italy14 and Germany15 tomorrow morning.
A. has B. is going to be
C. will have D. has been
（2005年武汉）
［简析］第1）题依据时间状语this evening的提示，动词be应用一般以后时的形式，故答案为B.第2）题依据时间状语tomorrow morning的提示，动词be应用一般以后时的形式，故答案为B.
考试知识点4、There be句式的反意疑问句
陈述部分为There be句式的反意疑问句，简短问句由be的适合形式+ there构成。应该注意的是陈述部分中是不是有seldom，hardly，little，few，no，nothing，nobody之类的否定词或半否定词。若有，该部分应看作否定意义，简短问句部分则用一定式；假如陈述部分含有表示否定意义前缀的单词，该部分仍应看作一定意义，简短问句部分要用否定形式。比如：
There is nothing in the box，is there？
There was an unusual16 bike under the tree，wasn't there？
［考试试题甄选］
1）There is some water in that bottle，isn't _________？
A. there B. it C. that D. this
（2005年武汉）
2）There is little milk in the bottle.（变为反意疑问句）（2005年桂林）
There is little milk in the bottle，_________ _________？
［简析］第1）题的陈述部分为There be句式的一定形式，简短问句部分应用否定形式，空白处应填there，故答案为A.第2）题的陈述部分含有表示否定意义的单词little，因此，该部分应视为否定形式，简短问句部分应用一定形式，空白处应填is和there.
［巩固训练］
1. Look！ There _________ some apples on that tree.
A. is B. was C. are D. were
2. -Where is my money？ I can't find it.
-Look！ _________ some money under your chair.
A. There has B. There are C. There is D. It's
3. There _________ a football game this afternoon.
A. will have B. is going to be
C. has D. is going to have
4. There is going to _________ a basketball match in the playground this afternoon.
A. has B. have C. be D. hold
5. _________ a pen and two books on the desk.
A. There are B. There is C. Have D. Has
6. There is a beautiful clock on the wall，_________？
A. isn't there B. is there C. isn't it D. doesn't it
7. There is little milk in the bottle，_________？
A. isn't it B. is it C. isn't there D. is there
8. There _________ sixty minutes in an hour.
A. is B. are C. have D. has
9. There _________ an apple and some pears on the table.
A. have B. has C. is D. are
10. There's something to eat in the cupboard.（改为一般疑问句）
_________ there _________ to eat in the cupboard
11. There was no time for the twins to go shopping，_________ _________？（完成反意疑问句）
Key：
1. C 2. C 3. B 4. C 5. B
6. A 7. D 8. B 9. C
10. Is，anything. 11. was，there
