1. Tim was angry; he had been waiting for us since seven o'clock! We apologised and then promised not to be late again.
To solve this sentence, we need to use the past perfect continuous tense because Tim had been waiting for us for some time before we arrived. Therefore, we use "had been waiting" as the correct form of the verb "to wait" in this sentence. The word "for" is also necessary to indicate the duration of waiting.
2. I was surfing the net in my room when I heard the cat meowing loudly. I didn't need to feed the cat because I had fed it ten minutes before.
In this sentence, the past perfect tense is used to indicate an action that occurred before another past action. Before hearing the cat meowing, I had already fed it. Therefore, we use "had fed" as the correct form of the verb "to feed" in this sentence.
3. We saw David and said hello to him. We invited him to go to the cinema with us, but he was too tired because he had been studying for the test all day long.
In this sentence, the past perfect continuous tense is used to indicate an action that started in the past and continued up until another past action. David had been studying for the test for the entire day, so he was too tired to go to the cinema. Therefore, we use "had been studying" as the correct form of the verb "to study" in this sentence.
"1 He didn't need to wash the car as it wasn't dirty. He could have saved his energy and time."
Explanation: In this sentence, we use "didn't need to" to indicate that washing the car was not necessary because it wasn't dirty. By using this phrase, we emphasize that the action of washing the car was not required and could have been avoided.
2 She needn't have bought so many oranges when it wasn't necessary. She could have saved some money.
Explanation: In this case, we use "needn't have" to show that buying so many oranges was not necessary. By using this phrase, we highlight the unnecessary nature of the action and suggest that she could have made a different choice and saved some money.
3 We didn't need to take an umbrella since it wasn't raining. Carrying an umbrella was unnecessary.
Explanation: By using "didn't need to," we indicate that taking an umbrella was not required because it wasn't raining. This phrasing emphasizes that the action of taking an umbrella was unnecessary.
4 There was no need for us to turn on the light as it wasn't dark. We could have used natural light.
Explanation: Here, we use "no need for" to express that turning on the light was unnecessary because it wasn't dark. This way of phrasing the sentence emphasizes that there was no requirement to turn on the light.
5 It was not necessary for him to call me today, but he did. He could have contacted me later.
Explanation: By using "not necessary for," we indicate that calling today was not required, but he did it anyway. This phrasing highlights the fact that the action of calling was not necessary.
6 You needn't have made sandwiches for me, but you did. I appreciate your effort.
Explanation: In this case, we use "needn't have" to highlight that making sandwiches was not necessary, but it was still done. By using this phrasing, we acknowledge the effort made, despite it not being required.
7 They needn't have made reservations at the restaurant, but they did. The restaurant wasn't crowded.
Explanation: By using "needn't have," we indicate that making reservations was unnecessary since the restaurant wasn't crowded. This phrasing emphasizes the action being done despite not being required.
2)Is it interesting?
3)When did you start to do it?
4)Are your friends into it too?