modal verb by tackdisney

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									          F

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222   ก       . .ก F 2
                                          F
                  Adjective(                          F)                       ก
F                                                          ก FFก
                                                                           F        F
                        ก           ก
กก                      กF
      F                         F        Fก ก
              F             F           Adjective (                                F) F ก F
                  Fก                      F        ก                           ก
          ก                                                                                 F
 ก                      F                                  ก       F                    F
F ก           ก                               F                F

                                                                       F
                                                  (                                             )
                       F
 Can , Could       5
 May , Might       7
Should            9
Ought to          10
 Have to , Must   11
      Modals of deduction
  Modals of deduction ก F
     FF ก ก           ก F
   ก F F             ก    F
               F    ก F F

1. Can , Could      2. May , Might
3. Should           4. Ought to
5. Have to , Must
                           1. Can , Could
     Can        F                                ก     to be
able to                F    ก
   F
- I can speak French.             I am able to speak
French.
 F
1.     Can F                Perfect  Future Simple Tense
         F     F can         Tense ก F      F            F
     to be able to
2.      Past Simple Tense              F to be able to         I
could         I could                           Present
Future ก F
3.      F can F        Future ก         F      F
                    Future F          ก ก Adverb of Time
กก       F F
     ก       F Can
1.       F                 ( Ability )       F

- I can drive a car.
2. F             ก                  ก      ( Per-
mission )
- Can I enter the room?
3.       F           ก                   F ( Possi-
bility )
- She can finish her work by tomorrow.
     ก       F Could
1.       F    Past Tense          can
- When I was young , I could run
fast.
- I couldn t understand your yesterday explana-
tion.
2. Could F                    F
    Present Simple
- Could I borrow your pen?
- Could you tell me the time to go?
3. Could + have + past participle F
   F Fก
         ก      F      F Fก
- They could have started working two hours ago.
     - I could have finished it last year.
                         2. May , Might
     ก           F May
1.           F                         ก

- May god bless you.
- May your dream be true
2.       F
- May I open the window?
- May I go out , sir?
3.       F
- You may have what you want.
- You may go out now.
4.       F          F              F       ก

- Your wishes may come true.
- They may receive our news in a day or two.
     ก           F Might
1.           F       past           may
- He asked me that he might find the truth.
- He said that he might come.
2.       F                                present tense

a. F ก                                        F
- Might I open the window ?
b. F ก                          F                  ก           F

( F ก ก                             F กFก         F may)
- Your dream may be true.
3. may (might) + have + Verb 3
                 ก                        ก       F F      F       F   F   F
     ก
                            F
                              3. Should
Should          F          F Fก              ก
Present Tense F                    F                 F


- You should ask your teacher if you don t under-
stand.
- You should be more careful about what I advise.
- You should not do like that.         Past Tense        shall
  F
a. Indirect Speech
- He said to me , You will go home .
Direct Speech
- He told me that I should go home.
Indirect Speech
b. If-Clause
- If I came here in time, I should meet you.
- If I were you ,I should not do that silly thing.
                                                                 4. Ought to
            ก           F Ought to                                 F                            F
                ก                        F                               F           F
- You are a student , you ought to behave politely.
                        ก           F Past Tense                        Should   Ought to
ก                           ก                F           F                   ก
Should + have + Past Participle
Ought to + have + Past Participle
                    F           ก                    F           F Fก            ก       Fก          ก F
ก       F                                        F
- You should have come to the party yesterday.( But you did-
n t. )
- You should not have left home last night. ( But you
did. )
Should not + have + Past Participle
Ought not to + have + Past Participle
                            F        F                       ก                                F Fก         F
    F
- The party was boring. I shouldn t have gone
                               5. Have to , Must
        Has to , Have                           F       F                    F           ก       F                 ก
              F        F           F
- I have to go now because the train will leave at six.
- We have to do our work neatly or we shall not get good marks.
Must
  F Must          Fก           ก                                    F    F                               F
           Fก              F                ก       F                                        F       F
           ก                                                F           F ก ก ก
          ก        F                   F must       Tense                        F   F have to


- We must leave soon.
- They will have to return home before sunset.
must + have + Verb 3
                               ก                                ก       F F          F                       F F
    ก
   - Suda s light is out. She must have gone to
sleep.

								
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