be动和therebe句型

1、be动词的一般现在时有三种形式，即：am, is, are （翻译为“是”）1. 如果主语是第一人称I （我）时，be动词用am。如：I am a student. ?I am 还可缩写成rmam 与not不能缩写。2. 如果主语是you （你，你们）,they （他们，它们，她们）或名词复数（两个以上的人或物）时，be动词必须用are女口： Are you twelve ？are 与主语还可缩写。如：Were， Theyre, Youre。？而are 与 not可缩写成 arent3. 如果主语是单数名词、不可数名词或第三人称单数代词（ he, she, it）时，be 动词用is。如:My

2、 mother is a teacher.is 也可与主语缩写，如：Hes， My mother is = My mothers 等。但是 This is不可缩写。而is与not可缩写成isnt4. 句中含有be动词的陈述句变一般疑问句。把be动词提到句首，be动词要变大写。注意第一人称变第二人称。回答时用yes或no表示，结构：Yes,主语+be动词，No，主语+be动词+not。5. 句中含有be动词的肯定陈述句变否定句。先找肯定陈述句中的be动词，在be动词后加not.根据以上叙述我们可以把动词的用法以口诀的形式表述出来：我用am，你用are， is跟着他（he），她（she），它（it

3、） ； ？单数名词用is，复数名词全用are。变疑问，往前提，句末问号莫丢弃。变否定， 更容易，be后not莫忘记。疑问否定任你变，句首大写莫迟疑。There be 句型？1、There be 的固定句型：There be + 某物/某人+介词+某地表示：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。？3、 there be句型的否定句在be动词后加not , 般疑问句把be动词调到句 首。？4、there be 句型与 have(has)的区别：there be

4、表示在某地有某物(或人)have(has)表示某人拥有某物基础练习一一、选择正确的be动词I. 1a stude nt.2. Wefrie nds.3. Hea good boy4. Shemy sister.5、Theymy pare nts.6. You11 years old.7. Ia doctor.8. My fathera policema n.9. Wehav ing breakfast. 10. Tomfrom Can ada.II. Her sistera nu rse.12. Theymy good frie nds.13. Hemy brother.14. Sheten.

5、15. His motheran actress.二、句型转换？1、The cat is beautiful.否定句：？一般疑问句：？肯定/否定回答：？2、Her sisters are students. ？否定句：？一般疑问句：？肯定/否定回答：三、用“ have,has ” or “there is , there are ”1. Ia good father and a good mother. ？2. a telescope on the desk. ？3. Hea tape-recorder. ？4. a basketball in the playgro und.？5. Shes

6、ome dresses. ?6. Theya nice garde n.7. What do you ?8. a readi ng-room in the buildi ng ?9. What does Mike ?10. any books in the bookcase ?11. My fathera story-book. ?12. a story-book on the table. ?13. any flowers in the vase ?14. How many studentsin the classroom ?15. My parentssome n ice pictures

7、. ?16. some maps on the wall. ?17. a map of the world on the wall. ?18. Davida telescope. ?19. David s friendssome tents. ?20. many childre n on the hill 。基础练习二一、用be的适当形式填空？you -1fine. ?David,a nd my family nameGree n. ?coloryour clock -Itwhite. ?this in English-Itan apple. ?brother,my brothers. ?!T

8、heseapple trees. ?good stude nts and yougood teacher. ?sister and my brotherstude nts.?many eggs in the kitchen ?card number 5578 ?your pencils ?sweatersfifty dollars. ?muchhis jacket ?brother s birthdayDecember 1th. ?Kate s birthday16、Therea boy and two girls beside the gate. ?17、Five and threeeigh

9、t. ?二、将下面的句子变成一般疑问句并作出回答1. That is my football. ?2. Those are his books. ?3. Jim and Tom are good frien ds. ?4. My birthday is November 1st. ?5. His son is twelve years old. ?三、将下面的句子变成否定句？1. His card is on the table. ？2. These are my parents. ？3. Bob and Tony are our frien ds. ？4. These things are five dollars. ？5. The girl is his sister. ？四、改写句子1. I am a teacher. ？否定句：？一般疑问句：？ 肯定回答：否定回答：？2. They are new stude nts.否定句：？一般疑问句：？肯定回答：否定回答：？3. He is a good boy at home.否定句：？一般疑问句：？肯定回答：否定回答：4. We are hav ing an En glish class. ？否定句：？一般疑问句：？肯定回答：否定回答