动词讲解与练习一、动词分类1.行为动词（实义动词）。
实义动词可分为及物动词（一般情况下，其后要跟宾语，意义才完整）和不及物动词（之后不能也不需要跟宾语），许多动词既是及物动词又是不及物动词。
如：We study English.(及物) We study hard.（不及物）2.连系动词。
连系动词和表语一起连用，充当谓语。
常用的连系动词是be（是），look（显得），feel（感到），turn（变成），get（变得），become（成为）。
3.助动词。
助动词本身没有词义，不能独立作谓语，只能和主要动词一起构成谓语，表示否定，疑问，简略答语等。
如：Do you like oranges ?Yes, I do. I don’t know him . Will you go to the zoo?4.情态动词。
本身有意义，但不能独立作谓语，只能和主要动词一起构成谓语，表示说话人的语气和情态，情态动词没有人称和数的变化，常见的情态动词有：can（could）, may（might）, must, need等。
二、动词时态在英语中，同样一个动作，由于发生的时间不一样，所表示的形式就不一样，这就叫时态。
1、一般现在时用法：(1)表示经常发生，反复进行的动作，常用的时间状语有：often，usually，always，everyday，sometimes等。
We have breakfast every day .(2)表示客观真理。
如：The earth turns around the sun .(3)表示特征，状态和能力。
如：It’s big .(4)在时间状语和条件状语从句中，主句用将来时，从句用一般现在时。
如:I will be a teacher when I grow up . They will stay at home if it rains .构成：(1).主语不是第三人称单数时，动词用原型。
如：They often play football .(2).主语是第三人称单数时，动词必须用第三人称单数形式，即在动词原型后面加s。
She likes English .第三人称单数一般现在式的构成，规则如下（与名词变复数同）：（1）以元音字母结尾的一般在动词后加S：sees, comes（2）以o, sh, ch, x字母结尾的一般在其后加es: does, catches（3）元音字母加y结尾的，直接加s: plays, pays（4）辅音字母加y结尾的，把y改成i再加es: fly—flies, study—studies3.助动词do（第三人称单三用does）构成否定，疑问及答语，要注意助动词后原来的谓语动词一律恢复原型。
如：He doesn’t speak English .2．一般过去时（动词加ed）（1）表示过去的某个时间发生的动作或存在的状态The train arrived 10 minutes ago.He was ill yesterday.（2）表示过去一段时间内经常或反复发生的动作When I was a student, I often played football. He often came to see last year.（3）表示过去发生的一连串动作He came into the room, put down his school bag and began to do his homework.（4）在含有状语从句的复合句中表示两个过去的动作的关系He walked as he sang a song.规则动词过去式与过去分词的构成：（1）一般情况在动词后加ed：worked, helped, called, wanted, needed（2）以e结尾的动词加d：hoped, liked, agreed, changed（3）以辅音字母加y结尾的动词先将y变为i，再加ed：carried, studied（4）以重读闭音节结尾，末尾只有一个辅音的动词，双写该辅音字母后再加ed：stopped，preferred（5）还有不规则动词，要记熟（一般附在教科书后面）3．现在进行时（be(is/ am /are)+现在分词构成）（1）表示在说话的时刻或现阶段正在进行或正在发生的动作He is watching TV now.（2）表示现在时间内动作有间断的延续活动She is translating a novel now.表示按计划或安排将要进行或发生的动作（限于go, come, stay, leave, start）He is going to Shanghai tomorrow afternoon.They are coming to see you tomorrow.（4）表示一种尚未完结的渐变过程The boy is dying fast. 这个男孩快要死了。
动词的现在分词构成：（1）一般情况，加ing：going, asking（2）以不发音的e结尾的动词，去掉e再加ing：come—coming, write-writing（3）以y结尾的动词都直接加ing：studying, carrying, playing（4）以辅音字母结尾的闭音节动词，双写其辅音字母后，再加ing：put—putting, cut—cutting, spit—spitting（5）特例：die—dying，tie—tying，lie—lying4．一般将来时（will+动词原形，(be going to)+动词原形）（1）表示将来经常发生的动作They will come to work in this factory every year.From tomorrow on，he will come to teach us English once a week.（2）表示预见He will come back soon. It is going to rain soon.（3）表示意图I will write to him tomorrow. I will do it right now.（4）在疑问句中表示征询对方意见Will you come with me?（5）表示按计划安排即将发生的动作He is going to Nanjing tomorrow.（6）表示根据规定或时间表预计要发生的动作或事态,用于条件状语从句中.If he comes tomorrow, I will tell him about it.三、练习题A.用所给词的适当形式填空1 They ________ (visit) the museum last week.2. She ________ (go)to the cinema with her classmates tomorrow evening.3. John is always busy. He ________ (sleep) only six hours very night.4. Stay here; boy; don't go out. It ________ (rain) now.5. She often ________ (do) her lessons after supper.6. Hurry up! The train ________ (leave) in five minutes.7. They ________ (arrive) in London on the night of April 30, 1989.8. All the students ________ (plant) trees tomorrow.9. The earth ________ (move) around the sun.10. My brother likes English very much, and he ________ (practice) reading every morning.11. I usually ________ (do) my homework in the evening.12. If it _____ (not rain) tomorrow, the League members of class ______ (plant) trees around the lake?13. I ________ (finish) my homework by half past eight last night.14. I don't know if he ________ (come). If he ________ (come), please let me know.15. He ________ (join) the army a few years ago.16. I'll tell him the news as soon as he ________ (come) back.17. He said that they ________ (clean) the classroom the next day.18. We often ________ (have) an English party on Saturday evenings.19. Look! The Yong Pioneers ________ (pant) trees on the hill.20. He said that light ________ (ravel) much faster than sound.B.单项选择( ) 21. I’ll go with you as soon as I my homework.A. will finishB. finishC. am finishingD. finishes( ) 22. If it tomorrow, I won’t go to the cinema.A. will rainB. rainsC. is rainingD. rain( ) 23. She is going to be a nurse when she up.A. is going to growB. growsC. growingD. grow( ) 24. My father usually breakfast.A. cookB. cooksC. is cookingD. is cooked( )25. The twins Chinese in an evening school now.A. is studyingB. are studyingC. studiesD. have studied( ) 26. We to learn English three years ago.A. beginB. beganC. begunD. have begun( ) 27. Look! There _________ some apples in that tree.A. isB. wasC. areD. were( ) 28．We'll have to clean the plates before Mother _________ home.A. will comeB. is comingC. comeD. comes( ) 29. There will not be any paper money ________ 100 years.A. forB. inC. agoD. at( ) 30. There ________ a ball game next Sunday.A. haveB. is going to beC. hasD. is going to haveC.句型转换31.Li Lei reads English every day.（改为否定句）32.He is a farmer .（改为一般疑问句并作肯定回答）33.We clean our classroom every morning .（改为一般疑问句并作否定回答)34.They often play soccer.（对划线部分提问）35. l’m living in Guangzhou now.（用in three years改写句子）I ____________ ___________ in Guangzhou __________ three years.36. I think you should clean your bedroom first. （改为否定句）I __________ think you __________ clean your bedroom first.37.He has some money, too.（改为否定句）He ___________ ________ _________ money, .38.He didn’t finish his work .（改为肯定句）39.The boy is reading .（改为否定句）40.He will be back in a month .（改为否定句）。