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1、.,Be动词、助动词和情态动词,专题二：,.,Be动词,一般现在时中be动词的用法 be am is are （1）am用在I后 I am a student. Im happy. （2）are用于复数主语和第二人称单数（你，您）等情况 Are you Chinese? They are basketball players. The books are expensive.,.,（3）is用在主语是第三人称单数或不可数名词等情况 He is my friend. The dog is yellow. Time is money. be动词的缩写形式 I am = Im he/she/it i
2、s = hes/shes/its we/you/they are = were/youre/theyre is not = isnt are not = arent who is = whos what is = whats,.,be动词的在一般现在时中的各种句型 1）肯定句： 主语 + be + 其他成分 She is beautiful. 2）否定句： 主语 + be + not + 其他成分 She is not beautiful. 3）一般疑问句（用yes或no来回答）：be + 主语 +其他成分 + ？ Is she beautiful？ 4）特殊疑问句： 疑问词 + be + 主
3、语（其他成分）+ ？ Whats your name? Whos that?,.,be的用法口诀： 我用am，你用are, is跟着他、她、它。 单数is，复数are，勿忘be的三变化。 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。 一般现在时中be动词的用法相对简单，上面的口诀基本包括了be动词的各种问题。,.,Exercises,用am/is/are填空 1、She（ ）a student. 2、His jacket （ ）on the table. 3、We （ ）family. 4、-How （ ）you? -I （ ）fin
4、e, thanks. 5、Jack and I （ ）good friends. 6、（ ）she a student? 7、（ ）you a teacher?,.,I _ an English teacher now. They _ glad to see each other . Helen and Nancy _ good friends. The little dog _ two years old this year. Look, there _ lots of grapes here. There _ a sign on the chair on Monday. Today _ t
5、he second of June. Yesterday _ the first of June. It _ Childrens Day. All the students _ very excited. The sky blue. I a boy. There _(be) some water in the bottle.,am,are,are,are,am,was,is,is,is,is,is,was,were,.,16. The black gloves _ for Su Yang. 17. This pair of gloves _ for Yang Ling. 18. The two
6、 cups of milk _ for me. 19. Some tea _ in the glass. 20. Gao shans shirt _ over there. 21. My sisters name _Nancy. 22. This _ not Wang Fangs pencil. 23. _ David and Helen from England? 24. There _ a girl in the room. 25. There _ some apples on the tree. 26. _ there any kites in the classroom? 27. _
7、there any apple juice in the bottle? 28. There _ some bread on the plate. 29. There _ a boy, two girls, three men and ten women in the park. 30. You, he and I _ from China.,are is are is is is is Are is are Are Is is are are,.,句型转换,1. They are doing housework .(分别改成一般疑问句和否定句) 2The students are clean
8、ing the classroom . ( 改一般疑问句并作肯定和否定回答) 3. Tom is under the tree.（变为否定句）,Are they doing housework? Yes, they are. / No, they arent. They arent doing housework. Are the students cleaning the classroom? Yes, they are./ No, they arent. Tom is not under the tree.,.,4. The skateboards are black.(改成否定句) 5.
9、Its branches are long.(意思不变，改否定句) 6.She is always a good student.(改为一般疑问句，作否定回答) .,The skateboards are not black. Its branches are not short. Is she always a good student? No, she isnt.,.,助动词do/does,什么是助动词？ 顾名思义，助动词就是帮助动词的，而本身没有实际意义的动词，是具有雷锋精神的词汇。 助动词do的三种变化形式 do 第三人称单数时使用的does 过去式did,.,do的基本用法： 1 构
10、成否定句 2 构成一般疑问句及回答 3 构成特殊疑问句 do的各种形式 肯定式：do 否定式：dont/do not do用在第一人称单复数、第二人称单复数和第三人称复数作主语，且时态为一般现在时的句子，如： I like that dress. 否定句：I dont like that dress. 一般疑问句及回答：-Do you like that dress? -Yes, I do/ No, I dont.,.,特殊疑问句：Which dress do you like? does 肯定式：does 否定式：doesnt does用在第三人称单数作主语，且时态为一般现在时的句子 当do
11、es出现时，句子中用动词原形。如： She likes that dress. 否定句： She doesnt like that dress. 一般疑问句及回答：-Does she like that dress? -Yes, she does./No, she doesnt. 特殊疑问句：Which dress does she like?,.,Exercises,按要求改写句子： 1. Ithinkheisveryold.(否定句) I_thinkhe_veryold. 2. Thissignmeans“Nosmoking”.（改为特殊疑问句） What_thissign_? 3. My
12、planthastwogreenleaves.(就划线部分提问) _ _ _ _ _ _plant _? 4. I love my parents.（改为一般疑问句） _?,dont,is,does,mean,How many green leaves does your have,Do you love your parents,.,用动词的适当形式填空。 1、They_(read)Englishinthemorning. 2、She_(like)hercoatverymuch. 3、Heusually_(watch)TVat7:00intheevening. 4、Thegirl_(fly)
13、akiteeveryspring. 5、He_(get)upat7oclockinthemorning. 6、Themanandthewomanalways_(listen)totheradio. 7、Lucy_(notsing)verywell. 8、I_(notgo)toschoolbybuseveryday. 9、Daming_(run)araceonMondays. 10、We_(do)highjumpwithourfriendsatschool.,.,11、Thelittlegirls_(read)Englishintheevening. 12、They_(like)hercoatv
14、erymuch. 13、Sheusually_(watch)TVwithhersisterintheevening. 14、Thegirlsandtheboys_(fly)akiteeveryspring. 15、We_(get)upat7oclockinthemorning. 16、Mybrotheralways_(listen)tomusicinhisroom. 17、LucyandLily_(notspeak)Chinese. 18、I_(notgo)toschoolbybuseveryday. 19、Daming_(eat)ahamburgeronMondays. 20、We_(play)gameswithourfriendsatschool.,.,注意：一般现在时态句的否定句和一般疑问句，当句子中有动词时，我们就用助动词do或是does.如果没有动词时，我们就选用is或是are，也就是“Be”除了原形的“be”之外，还有另外七种形式：am,is,are,been,being,was,were.助动词后接动词原形。,We _
