Это не Past simple или Past continuous, а Past simple или Present Perfect. Правило такое: если речь идет об уже свершившемся действии, но без указания когда именно, и оно могло быть совершено и прямо сейчас- используется Present Perfect. Если же речь идет об уже свершившемся действии с указанием конкретного времени или события, которые уже завершились- используется Past simple. 2) A: Have you seen this musical? ( see) B: Yes , it's great ! I saw it when I was in London last month. (See) 3) A: Have your parents visited your office ? ( visit) B: Yes, they came last week. ( come) 4) A: Have you had anything to drink? ( have) B: I had some tea and a glass of orange juice at breakfast. ( have)
Правило такое: если речь идет об уже свершившемся действии, но без указания когда именно, и оно могло быть совершено и прямо сейчас- используется Present Perfect. Если же речь идет об уже свершившемся действии с указанием конкретного времени или события, которые уже завершились- используется Past simple.
2) A: Have you seen this musical? ( see)
B: Yes , it's great ! I saw it when I was in London last month. (See)
3) A: Have your parents visited your office ? ( visit)
B: Yes, they came last week. ( come)
4) A: Have you had anything to drink? ( have)
B: I had some tea and a glass of orange juice at breakfast. ( have)
D Rewrite the sentence in the passive.
1 They say the fossil is over 60 million years old.
It is said that the fossil is over 60 million years old.
2 A paleontologist has found hair samples from an unknown creature.
Hair samples from an unknown creature have been found by a paleontologist.
3 Locals believe a cat-like beast lives in Black Mountain.
It believed by the locals that a cat-like beast lives in Black Mountain.
4 They called a local zoologist to identify the strange animal.
A local zoologist was called to identify the strange animal.
5 People think the unusual object came from a UFO.
The unusual object is thought to have come from a UFO.