CERTAIN MUST BE CAN’T BE PRESENT PROBABLE MAY BE MAY NOT BE 1.- I’m sure John is worried about us.. 3.- I’m sure that John doesn’t live in this town.. 4.- I’m sure everybody is at home
Trang 1CERTAIN MUST (BE) CAN’T (BE) PRESENT PROBABLE MAY (BE) MAY NOT (BE)
1.- I’m sure John is worried about us.
John must be worried about us.
2.- Perhaps your father is at the station.
3.- I’m sure that John doesn’t live in this town.
4.- I’m sure everybody is at home now.
5.- Perhaps those aren’t our rooms.
6.- I’m sure the dog isn’t in the garden.
7.- I’m sure the children don’t like classical music.
8.- Perhaps that boy is German or Swedish.
9.- It’s possible that animals are happy in zoos.
10.- I’m certain everybody knows the answer.
11.- I’m certain her boyfriend is good-looking.
12.- Perhaps Mr Jones has a dog.
13.- It’s possible that he practices too much exercise.
14.- I’m sure they are waiting for us.
15.- I’m sure those boots aren’t for climbing.
16.- It’s possible that doesn’t know where he is.
Trang 2P R E S E N T P A S T
CERTAIN MUST (BE) CAN’T (BE) MUST HAVE (BEEN) CAN’T HAVE (BEEN)
PROBABLE MAY (BE) MAY NOT (BE) MAY HAVE (BEEN) MAY NOT HAVE (BEEN)
POSSIBLE MIGHT (BE) MIGHT NOT (BE) MIGHT HAVE (BEEN) MIGHT NOT HAVE (BEEN)
1.- I’m getting married next week
You (be) joking!
2.- Hugh never does any work but he’s always at the top of his class He (be) a very clever boy
3.- This (be) John’s coat There a letter addressed to him in his pocket
4.- He was terribly tired after walking six kilometres He (be) as strong as people think
5.- We haven’t made any plans for our holiday yet We (go) to Greece, or Italy, or we even stay at home
6.- I’ve been travelling since four o’clock
You (be) tired
7.- Tom (write) this because it’s in French and he doesn’t speak French at all 8.- There’s somebody at the door Do you think it (be) the postman?
9.- Isn’t that John over there?
No, it (be) him - he’s much taller than that
10.- Janet (catch) the 8.30 train because she left the house at 8.31
11.- Hercules killed two snakes that crept into his cot He (be) a very strong baby 12.- The prisoner (escape) that way because there are his footprints
13.- I (go) to Spain next week, but I’m not sure yet
14.- I wonder where Emma is She (be) with Nelly, I don’t know
15.- Don’t phone her now She (be) at home Perhaps it’s too early
Trang 3
16.- She keeps crying She (have) some problem
17.- He knew that she (steal) it as she hadn’t been in the house at the time 18.- That man has stopped breathing He (die)
19.- There’s the doorbell That (be) ……… the postman It’s only seven o’clock 20.- It’s still winter The water (be) warm enough to swim
21.- Janet’s hair is very untidy She (be) to the hairdresser’s as she says 22.- I (see) you again - who knows
23.- That’s an enormous animal It (weigh) a ton
24.- John (bring) his camera I saw him put it into his suitcase
25.- We (be) all millionaires one day
26.- The (sell) all the tickets for the Cup final There weren’t so many people
in the queue
27.- You failed your exam
I (fail) ……… I studied a lot
28.- John didn’t come to school this morning
Didn’t he? He (be) ill He never misses a lesson
29.- There (be) some trouble at the football match The crash barriers have been broken down
30.- Mary (try) to slim I saw her eating cakes yesterday
KEY
Trang 4Page 1
2 Your father may be at the station
3 John can’t live in this town
4 Everybody must be at home now
5 Those may not be our rooms
6 The dog can’t be in the garden
7 The children can’t like classical music
8 That boy may be German or Swedish
9 Animals might be happy in zoos
10 Everybody must know the answer
11 Her boyfriend must be good-looking
12 Mr Jones may have a dog
13.- He might practise too much exercise
14 They must be waiting for us
15 He might not know where he is
Page 2
1 must be
2 must be
3 must be
4 can’t be
6 must be
7 can’t have written
8 may be
9 can’t be
10 can’t have caught
11 must have been
12 must have escaped
13 may
14 might
15 may not be
Page 3
16 must have
17 can’t/couldn’t have stolen
18 must have died
19 can’t be
20 can’t be
21 can’t have been
22 might see
23 must weigh
24 must have brought
25 might be
26 can’t have sold
27 can’t have failed
28 must be
29 must have been
30 can’t be trying