PRESENT PERFECT SIMPLE vs PRESENT PERFECT CONTINUOUS
1. We
(walk) 10 kilometres.
2. We.
(walk) for 3 hours.
3. She
.. (sleep) on every bed in this house.
4. She
(sleep) since 10 o'clock.
TT TT
5. That boy
(not/eat) anything this morning.
6. That boy! feat) ice-cream all morning.
7. The students (work) very well this term.
8. The students (write) 5 essays so far.
9. clean the bathroom all day and now I feel exhausted.
10. C (clean) the bathroom twice this week.

1. We have walked 10 kilometers.
- "Have walked" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of walking 10 kilometers has been completed, and the result is that we have achieved the distance of 10 kilometers.

2. We have been walking for 3 hours.
- "Have been walking" is used in the present perfect continuous tense to indicate an action that started in the past, is ongoing in the present, and may continue into the future. In this case, the action of walking has been happening continuously for 3 hours, and it is still ongoing.

3. She has slept on every bed in this house.
- "Has slept" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of sleeping on every bed in the house has been completed, and the result is that she has experienced sleeping on each bed.

4. She has been sleeping since 10 o'clock.
- "Has been sleeping" is used in the present perfect continuous tense to indicate an action that started in the past, is ongoing in the present, and may continue into the future. In this case, the action of sleeping started at 10 o'clock, and it is still ongoing.

5. That boy has not eaten anything this morning.
- "Has not eaten" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of eating has not occurred at all during the morning.

6. That boy has been eating ice-cream all morning.
- "Has been eating" is used in the present perfect continuous tense to indicate an action that started in the past, is ongoing in the present, and may continue into the future. In this case, the action of eating ice-cream started in the morning and has been happening continuously.

7. The students have worked very well this term.
- "Have worked" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of working has been completed, and the result is that the students have performed well this term.

8. The students have written 5 essays so far.
- "Have written" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of writing essays has been completed, and the result is that the students have written a total of 5 essays.

9. I have cleaned the bathroom all day, and now I feel exhausted.
- "Have cleaned" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of cleaning has been completed, and the result is that the bathroom has been cleaned. The speaker feels exhausted as a result of cleaning all day.

10. I have cleaned the bathroom twice this week.
- "Have cleaned" is used in the present perfect simple tense to indicate an action that started in the past and has a result in the present. In this case, the action of cleaning has been completed, and the result is that the bathroom has been cleaned twice during this week.