一般现在时和现在完成时讲解练习答案.doc

一般现在时1、 概念 表示现在经常发生的动作、存在的状态或习惯性的动作。2、 动词词型变化形式 第三人称有词形变化，其他人称动词均用原形单数第三人称动词变化：a.多数在动词后加s playplayslikelikes ,b.以s，x，sh，ch结尾的动词加es miss-misses, fix-fixes, wash-washes, watch-watches c.以辅音字母+o结尾的动词加es gogoes dodoes d.以辅音字母加y结尾，把y改i再加es flyfliesstudy-studies3. 一般现在时的句型1.肯定句构成：主语+动词 (注意人称变化) +其它成分I have a dog. We like the little cat. She sings well.2.否定句构成：行为动词的否定句：主语+助动词(do/does) + not +动词原形+其它成分He dosent have a dog.He isnt young.We dont like the little cat.(借助于助动词do) She doesnt sing well. (借助于助动词does)3.一般疑问句：A.行为动词的一般疑问句：助动词(do/does)+主语+动词原形 + 其它成分Do you like it? Yes, I do. / No. I dont . Does he(she) like it? Yes, he( she )does. / No, he ( she )doesnt.B. 动词be 的一般疑问句Am / Is /Are +主语 + 其它成分Are you a teacher? Yes, I am. / No, I am not.Are they students of your school.Yes they are / No they arent.4.特殊疑问句：特殊疑问词 + 一般疑问句How many students are there in your school?What do you usually do on Sunday?四一般现在时的用法1.经常性或习惯性的动作，常与表示频度的时间状语连用。如：every year, sometimes, at 5 oclock, on Sunday.I get up at six oclock every day.He gets up at six oclock every day.She smokes too much. I telephone to my parents once a week.2.表达客观真理，科学事实。如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。Three and four makes seven.The teacher told us that the earth moves around the sun.Shenyang lies in the north of China.3.在格言或名言警句中。Pride goes before a fall. 骄必败。Actions speak louder than words.事实用于雄辩。4.表示现在的状态、性格、个性。I dont want more, thanks.He is a good student. He is always ready to help others.五.一般现在时其它用法一般现在时表将来1.含有go, come, return, arrive, leave, start, begin等动词的一般现在时表将来。表示在时间上已确定或安排好的事情。 The school bus leaves at eight .2.在时间或条件句中。When Tom comes, ask him how to fix the tap.Ill help you as soon as I arrive there.3.在动词hope,take care that,make sure that等后。练习 一.用词的适当形式填空。1.What time_ his father_(do) the work?2.He _(get) up at five oclock.3._ you _(brush) your teeth every morning.4.What _ ( do ) he usually _( do ) after school?5.Tom _ ( study ) English, Chinese, Maths, Science and Art at school.6. Kitty sometimes _(go) to the park with his sister.7.At eight at night, she _( watch ) TV with her parents.8. _ Mike_( read ) English every day?9.How many lessons_ your classmates_( have ) on Monday?10.We often_ ( play ) football in the playground.二选择() 1. _ you have a book?A. DoB. AreC. IsD. Have()2. They _ on a farm.A. workingB. is workC. workD. is worked() 3. Does Peter like to watch TV?_. A. Yes, he likeB. No, he doesntC. Yes, hed likeD. No, he likes()4. She doesnt _ her homework in the afternoon.A. doingB. to doC. doesD. do()5. How _ Mr. Brown _ to America?A. do,goB. is,goC. does,goD. does,goes()6. Wheres my camera? I_ it.A. am not findingB. am not seeingC. cant findD. cant look at()7. How _ he go to work?He _ to work by bike.A. does ;goB. do;goesC. do ;goD. does;goes()8. _ you usually late for school?No, _.A. Do ; I amB. Does ;notC. Are ; Im notD. Are ; I arent()9. _ she _ home at six every day?A. Is , leaveB. Does , leaveC. Is , leavesD. Does , left()10. Mr. Yang _ English this term.A. teaches ourB. teaches usC. teachs usD. teach our答案：一.1.does, do2. gets3. Do, brush4. does, do5. studies6. goes7. watches8. Does, read9. do, have10. play二.1-5 A C B D C6-10 C D C B B 现在进行时定义：现在进行时的定义：现在进行时表示现在或当前一段时间正在进行的动作。可以表示有计划的未来，也就是用现在进行时表示将来。构成：现在进行时的构成是:主语+be+v.ing现在分词形式肯定句:主语+be（is/am/are）+现在分词否定句：主语+be（is/am/are）+not+现在分词一般疑问句:be（is/am/are）+主语+现在分词特殊疑问句：特殊疑问词+相应be动词+主语+现在分词+sth变化规则：1.直接+ ing(例：sleep+ing sleeping)2.以不发音的e结尾的去掉e,再+ing(例：bite-e+ing biting)3.重读闭音节，且末尾只有1个辅音字母，双写辅音字母+ing(例：sit+t+ing sitting 另cut - cutting begin -beginning ) 4.特殊变化：die-dying,lie-lying，tie-tying5.不规则变化时间状语：可用来表示现在进行时的时间状语，常用的有：now, this week, at this moment 等；或者告诉你一个准确的现在时间，或者用look, listen提醒听者注意正在发生的事。例如：Listen! She is singing an English song.听，她正在唱英语歌。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。用法：1 最基本的用法是表示此刻正在进行或发生的动作，通常和时间状语now、at the moment等连用。 They are visiting the fire station now. 他们现在正参观消防站。2表示现阶段正在进行但此刻不一定在进行的动作，它通常和时间状语now、these days等连用。 They are working in this factory these days. 这几天他们在这个工厂工作。3表示最近的确定或安排时。 He is taking me to the theatre this evening. 今晚他要带我到电影院。4某些表示位置转移的动词如go、leave、start、come等它们的现在进行时表示将来。 He is leaving for the Great Wall tomorrow. 明天他要动身去长城。练习用现在进行时完成下列句子:1. What_you_(do)?2. I_(sing)anEnglishsong.3. What_he_(mend)?4.He_(mend)acar.5._you_(fly)akite?Yes,_.6._she_(sit)intheboat?7._you_(ask)questions?8.We_(play)gamesnow选择填空。1.Someare_intheriverandsomeare_games.A.swiming,playing B.swimming,plaiing C.swimming,playing D.swimming,plaing2. Look!Theboystudentsare_footballwhilethegirlsare_.A. playing,dance B.playing,dancingB. C.play,dancing D.play,dance3.Mr.Smith_shortstories,buthe_aTVplaythesedays.A.iswriting,iswriting B.iswriting,writesC.writes,iswriting D.writes,writes4.I_tothecinema.I_thereeverySund