Exercise 6.1 Identify if the model in the given sentences express the past/present ability or past/present possibility or past/present request.

Exercise 6.1 Identify if the model in the given sentences express the past/present ability or past/present possibility or past/present request.

Can I have a kilo of green cabbages, please? A: What are you going to do this weekend? B: I may go to Rayong. Sue hasn't arrived yet. She might notbe able to find our house. A: Can I help you, madam? B: Thank you. It's very nice of you. Jill could cycle for five hours on the end when she was 18. Can you wait a moment, please? Could you open the door, please? She could drive very fast when she was young. Mary can speak four languages including Chinese. He hurt his thumb so he was not able to write well. A: What shall we do this evening? B: We could go to the concert at the Culture Centre. I didn't enter the competition. I could have won a prize. A: Did you go to Phuket last summer? B: No, we didn't. We could have gone there but we changed our mind. A: Why didn't he phone us? B: His phone may have been broken.      Answer:       [CAN] - request The speaker request a kilo of green cabbages. [MAY] - possibility The question is asked about the future plan of where the person he talked to going to do in the weekend and the answer shows the possibility that he/she is going to Rayong. [MIGHT NOT] - possibility The context talked about Sue who hasn't arrived and then stated the possibility of her not being able to find the house. [CAN] - offer In this context, can has the meaning of offering help. [could] - ability in the past Here could show the cycling ability in the past, when Jill was 18. [CAN] - request can in this context used to make a request for waiting a moment. [COULD] - request could in this context used to make a request for opening the door. [COULD] - ability in the past Here could show the driving ability in the past, when she was young. [CAN] - ability Here can shows that Mary has ability to speak four languages. [WAS NOT ABLE TO] - ability in the past was not able to shows that he has no ability to write well, in the past. [COULD] - suggestion could in this context used to make a suggestion to go to the concert in the evening. [could have + v3] - possibility in the past could/may/might/show have + v3 used to show the possibility in the past that has not really happened. This context means that if the speaker participated in the competition, he could have won the prize. This is the if condition of untrue in the past. [could have + v3] - possibility in the past This is the same as number 13. [may have + v3] - possibility in the past This is the same as number 13.

Note:

• may / might / could have + V3 expresses possibility. There's about %50 chance of something happening in the past.
• should have + V3 express expectation in the past, but hasn't really happened
• must have + V3 expresses logical conclusion in the past. There's about %85 chance of something happening in the past, but hasn't really happened.

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