1、一般现在时与现在进行时构成及练习一般现在时的构成及用法【No. 1】一般现在时的定义及构成一般现在时表示现在经常反复发生的动作、存在的状态或习惯性的动作。构成:主语+动词原形+宾语一般现在时用行为动词的原形，但第三人称单数作主语时，动词要用第三人称单数形式。动词第三人称单数形式的构成：1.一般的动词词尾+S。2.以为o,sh,ch,s,x结尾的动词+es.3.以辅音字母Y结尾的动词把Y变成i再+es。【No. 2】一般现在时的应用(1)在实际应用中，一般现在时常与以下时间状语联用：always, usually, often, sometimes, every week (day, year,
2、 month), once a week, on Sundays 例句：He usually plays football on Sundays.他经常在星期日踢足球。(2)没有时间状语，可以分以下四种类型：Abe型 这一类型由be动词+名词、形容词、副词、代词、数词或介词短语等一起构成谓语，表示主语的个性、特征或状态。如： I am a student.(主语+be动词+名词) 我是一名学生。 They are hungry.（主语+be动词+形容词）他们肚子饿了。 He is out.(主语+be动词+副词) 他出去了。 That pen is mine.(主语+be动词+代词) 那支钢笔
3、是我的。 I am fifteen.(主语+be动词+数词) 我十五岁。 The bike is under the tree.(主语+be动词+介词短语) 那辆自行车在树下。Bdo型 do型由行为动词充当谓语，表示经常性或习惯性的动作，其构成为“主语+动词原形或动词第三人称单数形式”。如： I know it. 我知道这。 He believes me. 他相信我。Cthere be型 there be型句子表示“存在”，其构成为“there be+主语+其他”，表示客观事实。用法遵循“就近原则”，即主语是单数或并列主语中的第一个主语是单数，则用there is；主语是复数或并列主语中的第一
4、个主语是复数，则用there are。如：（1）There is an eraser on the teachers desk.(主语an eraser是单数) 讲桌上有一块 橡皮擦。 （2）There is an orange，five apples and eight bananas in the bag.(并列主语中的第一个主语an orange是单数) 袋子里有一个橙子，五个苹果和八个香蕉。D情态动词型 情态动词型句子的构成为“主语+情态动词+动词原形”，情态动词和动词原形一起构成谓语，表示说话人对所叙述的动作或状态的看法。如： He can speak a little Englis
5、h.(can+speak) 他会说一点儿英语。 May I have a book, please?(may+have) 请问我能看一看吗？【No. 3】一般现在时的变化否定形式：首先找句子中有没有be动词（is, am或者are）或情态动词（can），如果有，只要在be动词或情态动词后面加上not。如果句子中没有be动词（is, am或者are）或情态动词（can）那么根据主语在后面加入dont(you, I或者复数)或doesnt（第三人称单数）。一般疑问句：首先找句子中有没有be动词（is, am或者are）或情态动词（can），如果有，只要将be动词或情态动词提前，放到主语前面。注意：
6、句中第一人称和第二人称要互换。如果句子中没有be动词（is, am或者are）或情态动词（can）那么根据主语判断在句首加入do(you, I或者复数)或does（第三人称单数）,当谓语动词是三单形式时要还原。注意：句中第一人称和第二人称也要互换。特殊疑问句：首先分析划线部分的意思，确定用哪个疑问词（what, where, who, when, which, whose, how, how many, how much, what shape, what colour, what doing, where going, what do）,然后找句子中有没有be动词（is, am或者are）或
7、情态动词（can），如果有，只要将be动词或情态动词放到主语前面（疑问词的后面）。如果句子中没有be动词（is, am或者are）或情态动词（can）那么根据主语判断加入do(you, I或者复数)或does（第三人称单数）。注意：句中第一人称和第二人称也要互换。现在进行时的构成及用法【No. 1】现在进行时的定义及构成现在进行时表示正在进行或发生的动作.现在进行时构成:主语+be+动词ing现在分词形式 动词-ing形式的构成：1.一般在动词原形末尾加ing.2.以不发音的字母e结尾的动词，先去掉e，再加-ing.3.以重读闭音节结尾的动词，如果末尾只有一个辅音字母，应先双写这一字母，再加i
8、ng.Be动词的用法为：第一人称单数+am+动词-ing第三人称单数+is+动词-ing其他人称（第一人称复数，第二人称单、复数，第三人称复数）+are+动词-ing【No. 2】现在进行时的应用在实际运用时，现在进行时常用以下几种情况：(1)当句子中有now时，常表示动作正在进行，这时要用现在进行时。如： They are playing basketball now.现在他们正在打篮球。(2)以look!, listen!开头的句子，提示我们动作正进行，这时要用现在进行时。如： Listen！She is singingan English song.听，她正在唱英语歌。(3)表示当前一段
9、时间或现阶段正在进行的动作，且此时有this week, these days等时间状语，这时常用现在进行时。如： We are making model planes these days.这些天我们在做飞机模型。(4)描述图片中的人物的动作，也为了表达更生动。此时也常用现在进行时。如： Look at the picture. The children are flying kites in the park.看这幅图，那些孩子正在公园放风筝。【No. 3】现在进行时的变化肯定句式：主语+be( am, is, are)+现在分词+其它.否定句式：主语+be(am, is, are) +n
10、ot +现在分词+其它.一般疑问句：Be(am, is, are) +主语+现在分词+其它？ 特殊疑问句：疑问词+be(am, is, are)+主语+现在分词+其它？ 对现在进行时的特殊疑问句的回答，它不可以用Yes或No直接作答，要根据实际情况回答。附:有些动词（状态动词不用于进行时态） 1.表示知道或了解的动词:believe,doubt,forget,imagine,know, remember,realise, suppose,understand 2.表示“看起来”“看上去appear,resemble,seem 3.表示喜爱或不喜爱hate,like.love.prefer 4.
11、表示构成或来源的动词 be come from.contain,include 5.表示感官的动词 hear see smell sound taste 6.表示拥有的动词belong to.need.own .possess.want .wish一般现在时态练习题一、写出下列动词的第三人称单数形式1. work_ 2. watch_ 3. clean_ 4. write_ 5. teach_ 6. wash_ 7. play_ 8. read_ 9. go_ 10. do_ 11. fly_ 12. study_13. drink _ 14. cry_ 15. have_16. sit _
12、17. swim _ 18. draw _ 19. make _ 20. run _ 21. carry _ 22.leave _ 23. arrive _ 24. watch _ 25.clean_ 26. walk_ 27. stay_28.jump _ 29. come _ 30. pass_31. stand_ 32. like _ 33. love_34. smile_ 35. laugh_ 36. know_37. speak_ 38. wear _ 39. look_40. drive_ 41. skip _ 42. eat_43. buy_ 44. point_ 45. liv
13、e_46. say_ 47. want_ 48. talk_49. invite_ 50. count_ 51. take_二按照要求改写句子1. Dan watches TV every evening.(改为否定句)_2. I do homework every day.(改为一般疑问句，作否定回答)_3. She likes milk.(改为一般疑问句，作肯定回答) 4. Amy likes playing computer games.(改为一般疑问句，作否定回答) 5. We go to school every morning.(改为否定句)_6. He speaks Englis
14、h very well.(改为否定句)_7. I like taking photos in the park.(对划线部分提问)_8. John comes from Canada.(对划线部分提问)_9. She is always a good student.(改为一般疑问句，作否定回答)_10. Simon and Daniel like going skating.(改为否定句)_三改错(划出错误的地方，将正确的写在横线上)1. Is your brother speak English? 2. Does he likes going fishing? 3. He likes pl
15、ay games after class. 4. Mr. Wu teachs us English. 5. She dont do her homework on Sundays. 四.把下列肯定句变为否定句。1. I have two pencils._.2. Bob has short, brown hair._.3. We fly kites in the park._.4. My uncle works in a store._.5. She wears a pair of glasses._.6. I like to play chess._.7. My mother goes to
16、 work by bus._.8. They go for a walk in the evening._.9. Jenny and Danny live in Canada._.10.My family likes to have fun together. _.二、把下列肯定句变为一般疑问句并作出肯定回答。1. My father has a black car._? _.2. Beijing has shops and hotels._? _.3. Kangaroos live in Australia._? _.4. We need four train tickets._? _.5.
17、 Australia has beautiful beaches._? _.三、把下列肯定句变为一般疑问句并作出否定回答。1. He needs a new sweater._?_.2. My mother and I watch TV every day._? _.3. The flag has yellow stars._?_.4. We go on a trip to Beijing._?_.5. He has a pair of red pant._?_. 现在进行时练习1. 写出下列动词的现在分词形式work_ sing_ play study_ have _ dance _ wri
18、te take_ run_ sit_ shop_swim_lie_二.按要求改写句子1. The boy is playing basketball.否定句：_ 一般疑问句：_肯定回答：_否定回答：_对“is playing basketball”提问：_对“The boy”提问：_2. They are singing in the classroom.否定句：_一般疑问句：_肯定回答：_否定回答：_对“are singing”提问：_对“in the classroom”提问：_3. 用现在进行时完成下列句子1. What _ you _ (do)?2.I _ (sing) an Engl
19、ish song.3. What _ he _ (mend)?4. He _ (mend) a car.5. _ you _ (fly) a kite? Yes, _.6. _ she _ (sit) in the boat?7. _ you _ (ask) questions?8. We _ (play) games now.9. What are you _(do) now? I _(eat) bread.10. Its nine oclock. My father_(work) in the office.11. Look, the boy_(put) the rubbish into
20、the bin.12. _he_(clean) the classroom? No, he isnt. He_(play).13. Where is Max? He_(run) on the grass.14. Listen, who_(sing) in the music room? Oh, Mary_(sing) there.4.选择题 1. Who _ over there now? A. singing B. are sing C. is singing D. Sing2.Its eight oclock. The students _ an English class.A. have
21、 B. having C. is having D. are having3.Listen! The baby _ in the next room. A. crying B. cried C. is crying D. Cries4.Look! The twins _ new sweaters. A. are wearing B. wearing C. are wear D. is wearing5.Dont talk here. Grandparents _.A. is sleeping B. are sleeping C. sleeping D. Sleep6.Tom is a work
22、er. He _ in a factory. His sisters _ in a hospital.A. work/ work B. works/ work C. work/ works7.Who _ English best in your class? A. speak B. speaks C. Speaking8.Mrs. Read _ the windows every day. A. is cleaning B. clean C. Cleans9.We _ music and often _ to music. A. like/ listen B. likes/ listens C
23、. like/ are listening10.She _ up at six in the morning. A. get B. gets C. Getting11.On Sundays he sometimes _ his clothes and sometimes _ some shopping.A. wash/ do B. is washing/ is doing C. washes/ does12.The twins usually _ milk and bread for breakfast, but Jim _ some coffeefor it.A. have/ have B. have/ has C. has/ have
