高中英語 Unit1《Tales of the unexplained》Grammar and Usage教案2 牛津譯林版必修2

1、Unit 1 Tales of the unexplained      Grammar and UsagePresent perfect tense1. Use different methods to present the present perfect tense. Here are some ideas:1) Please look at the screen. Pay attention to the different forms of the verbs:  2) Lets complete the following

2、 sentences, in which the predicate part is missing.    We_(study) English for about five years.         They_(live) in the south since their daughter was born.         I_ (read) your article three times. It's we

3、ll written.          The student_(finish) her homework already.          Eric_(go) back to his hometown today.           Answers: have studied    have

4、 lived    have read    has finished    has gone3) Read the following sentences and point out what tense or tenses are used in them and the reasons why they are used.    We have studied English for about five years. We began to study it five

5、 years ago.    They moved to the south in 1990 and have lived there since then.The student is doing her homework. She hasn't finished it yet.Eric left home last year and has just come back.2. We may wonder why some verbs can't be used in the present perfect tense. Lets read th

6、e following sentences, and try to find different usages of some verbs. Justin has been away from home for several days. He disappeared last Friday. They bought this house three years ago and they have lived here since then.My brother went to see my grandpa last week. He has visited him three times t

7、his month. So you see when an action happens over a period of time that began in the past and continues to the present, the present perfect tense is often used. When an action happened at a definite time in the past, the past simple tense is often used.3. Read Points 1 and 2 on page 8 to make sure w

8、hy the present perfect tense is used in these two sentences.               4. Go over Point 3 on page 8 to learn what time expressions can be used with the present perfect tense. Pay attention to the different usages between alrea

9、dy and yet, or for and since.5. Read Point 4 on page 8 to learn that the present perfect tense can be used in a situation where the action was completed only a moment ago. In this case, just is used.6. Go over Points 5 and 6 on page 8 and note that when we want to express a repeated action, we use t

10、he present perfect tense with the time expressions once/twice/three times . 7. Lets read the diary entry and then complete it using the correct forms of the verbs in brackets.Answers: (2) saw     (3) has visited     (4) loves     (5) h

11、asn't visited (6) has swum   (7) has never met    (8) has dived   (9) has found   (10) hasn't found     (11) Has, been Summary of The Present Perfect tense:1.We use the present perfect tense to talk about things that

12、happened in the recent past, but are connected to the present.Daniel has lived(live) in Beijing since he came to China.(Connection with the past: Daniel came to China. Connection with the present: Daniel is living in China.) 2.We use the present perfect tense to talk about something that s

13、tarted in the past, and is still happening now.                     came                 has lived   

14、0;                                   _                  

15、;    past               now                 future 3.We use the present perfect tense to talk about actions that were completed on

16、ly a short time ago.  I went to Egypt in 1986. I went to Egypt in 2004.I have been (be) to Egypt twice.4.We can also use the present perfect tense for repeated actions.Has it ever snowed(snow) in Hong Kong?No, it has never snowed(snow) there.5.We use the present perfect tense when the exact tim

17、e of an action is not clear or important. We use it with time expressions such as: already,  ever, for, just, lately, never, recently, since, yetNotes:1.       We use already for affirmative statements and yet for negative statements and interrogative sentences.2.&

18、#160;      We use for + a period of time and since + a point of time.3.       Structures connected with the present perfect tense:1) It is (has been) +a period of time +since-clause.2) This (That/It) is the first (second) time + that-clause 

19、;    (present perfect tense).3) This (That/It) is the only ) + that-clause (present perfect tense).4) This (That/It) is the best/ finest /most interesting + that-clause ResourcesThe present perfect-Three hours ago she baked a cake. And since then lets see-Shes already made the be

20、ds, written a letter, gone shopping, and cooked dinner.-And now shes just answered the telephone for the fifth time. English has a verb tense, the present perfect, which serves to denote past happenings that are relevant to, or that still have an effect at, the moment of speaking. This tense, f

21、ormed with the present of have plus a past participle (answered, cooked, gone, written, made, and so on), is really a combination of present and past together. Notice the kinds of adverbs and adverbial phrases that are closely associated with the present perfect. Hes been a success now, I would

22、 say, since 1990.And now hes just decided to enter politics. The simple past, denoting past happenings that are localized in the past, contrasts sharply with the present perfect, as can be seen best by the kinds of “time” adverbials that may be used with one tense but not with the other.Simple

23、Past                              Present Perfectyesterday                &

24、#160;                  since thenan hour ago                            

25、60;   so farI learned a new song    last night               Ive learned another   nowon Monday                 

26、60;              in the last hour                                 

27、;          already now                                      now&#

28、160;then         ×             then           then        ×       

29、0;     then(past)                       (future)          (past)          &

30、#160;         (future)(Attention is drawn to the past                (Attention is drawn to the present knowledgeEvent and the time it took place.)      &#

31、160;    of the song and not on the previous act of learning it.)               Therefore, do not say things like “Ive learned a new song yesterday”, which is a very common mistake.The speaker chooses among these and

32、 other tenses in part according to how he feels himself related to the event.Present perfect continuous tenseHere we will look at two situations in which the present perfect continuous tense is used. Note how the tense is formed and try to understand how the tense is used in sentences. We will pract

33、ise forming verbs in this tense and complete sentences.1. We sometimes use the present perfect continuous tense to talk about actions that started in the past and are still continuing, or have just finished but are still connected to the present in some way. For example,I've been waiting for an

34、hour and he still hasn't turned up.I'm so sorry I'm late. Have you been waiting long?2. Go over Points 1 and 2 on page 9 to understand this tense better.3. Go over Point 3 to see how the tense is formed.4. Fill in the missing words. Pay attention to the verb form in the example given in

35、the first picture (all the verb forms here are the present perfect continuous tense, except for the one in Sentence 5). It is a trap and does not require the present perfect continuous tense.Answers:(2) have been talking   (3) have been taking   (4) have been watching  

36、 (5) have seen         (6) have been writing5. Do with Part C1 on page 82 in Workbook to become familiar with the present perfect tense and the present perfect continuous tense. Present perfect or present perfect continuous?1. Go over Point I on page 10 t

37、o identify why the two different tenses are used in the two sentences.In the first sentence, the present perfect tense is used, which means that the action read isn't continuing, and Li Jia knows what the book is about now. In the second sentence, the present perfect continuous tense is used, wh

38、ich means that the action read is still continuing.2. Go over Point 2 on page 10. Note that the present perfect continuous tense can't be used with time expressions such as twice or how many times, because in this tense the action is continuous, not stopped and then started again.3. Go over Poin

39、t 3 on page 10 to define the meaning of a state verb or an action verb. Note that a state verb doesn't mean an action, so it can't be used in a continuous tense.4. Note that the present perfect continuous tense can't be used when the words always, never, yet, already or ever are used in

40、a sentence.5. Finish the two exercises on page 11.Answers:A (1) heard (2)been doing (3) been researching (4) been doing (5) started   (6) done    (7) read   (8) found   (9) started   (10) been doing   (11) been maki

41、ngSample answers:B 1. He has been waiting at an underground station.   2. They have been traveling in a UFO. It looks like a saucer. (Answers may be various.)   3. They probably have talked to animals or plants on the Earth as well as creatures on other planets. (Answer

42、s may be various.)   4. They have visited Mars, Venus, Jupiter and some other planets. (Answers may be various.) 6. Do with Part C2 on page 82 in Workbook to have one more chance to practise the usage of the two different tenses. ResourceThe Present Perfect Continuous-I still hav

43、ent figured out how she does it all.-I havent either, and Ive been trying now for ten years. The present perfect tense, like the simple present and the simple past, has a continuous form as well. The effect of the present perfect continuous is to make past happenings continuous throughout a tim

44、e span extending up to the present:Simple Past:   I learned a new song (three hours ago).                                  &#

45、160;                            now                     

46、0;                                    Hours             

47、0;                             then     ×              then(past) 

48、;                      (future) (past event accomplished, specific time)Present Perfect:   Ive learned another now (in the past few hours).       

49、0;                                                  

50、60;    now                                             

51、             Hours                                      

52、;      then        ×             then(past)                      

53、 (future) (past event accomplished, present relevance)Present Perfect Continuous:   Ive been learning still another now (for the past hour).                         

54、                                      now            &#

55、160;                                             Hours    &#

56、160;                                      then        ×   &#

57、160;         then(past)                       (future) (past event not necessarily accomplished, present relevance, possibly still going on at th

58、e moment of speaking)Verbs denoting action that can only be momentary or instantaneous (knock, hit, sneeze, interrupt, introducing, and so on) can also occur in the continuous. The meaning, however, is then one of repetition:Youve been interrupting me now ( for the past five minutes).  

59、60;                now then        ×             then(past)           

60、            (future) Although this class of verbs also includes arrive, leave, come, go, and so on, the “repetition” with the verbs just mentioned cannot be effected by one person alone: The guests haven been arriving now for an hour.

61、But not “The guest has been arriving now for an hour.ConsolidationI. Relative items in recent years college entrance examinations:1. My friend, who _ on the International Olympic Committee all his life, is retiring next month. (2006浙江) A. served        &#

62、160;   B. is serving          C. had served             D. has served2. John and I _friends for eight years. We first got to know each other at a Christmas party. But we _each other a c

63、ouple of times before that. (2002北京春季招生)    A. had been; have seen      B. have been; have seenC. had been; had seen       D. have been; had seen 3. With the rapid growth of population, the city _in all directions in the past five

64、 years. (2003北京春季招生)A. spreads      B. has spread      C. spread      D. had spread 4. -How long _at his job? -Since 1990. (2003北京春季招生)    A. were you employed      B. have you been emp

65、loyed    C. had you been employed   D. will you be employed 5. How can you possibly miss the news? It _on TV all day long. (2004 北京春季招生)    A. has been      B. had been        C. was   

66、      D. will be 6. Now that she is out of a job, Lucy _going back to school, but she hasnt decided yet. (2004 北京高考)    A. had considered    B. has been considering   C. considered        D. is going

67、to consider 7. -How are you today? (2000全國高考)   -Oh, I _as ill as I do now for a very long time.A. didnt feel    B. wasnt feeling   C. dont feel    D. havent felt8. I _ Ping-pong quite well, but I havent had time to play since the new year. (2001全國高考

68、)A. played       B. will play    C. have played    D. play9. I wonder why Jenny _us recently. We should have heard from her by now. (2002全國高考)    A. hasnt written   B. doesnt write   C. wont write 

69、60; D. hadnt written 10. Although he has lived with us for years, he _us much impression. (2004上海春季招生)    A. hadnt left    B. didnt leave    C. doesnt leave    D. hasnt left11. The first use of atomic weapons was in 1945, and their power _i

70、ncreased enormously ever since. (2004上海高考)    A. is         B. was         C. has been          D. had been12. She has set a new record, that is, the sales of h

71、er latest book _50 million. (2004福建高考)    A. have reached      B. has reached       C. are reaching    D. had reached13. More patients _in hospital this year than last year. (2004江蘇高考)    A. treated        B. have treated      C. had been treated    D. have been treated14. -The window is dirty. -I know. It _ for weeks. (2004廣西高考)    A. hasnt cleaned    B. didnt clean   C. w