1. Parrots imitate human speech.

2. Parrots mimic human speech.
3. Parrots copy human speech.
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Do they have the same meaning?

4. Can I ask you to take a picture of us?
5. Can I ask you to take a photo of us?
6. Can I ask you to take a photograph of us?

7. Can I ask you to take pictures of us?
8. Can I ask you to take photos of us?
6. Can I ask you to take photographs of us?
(Can we use all the expressions?)

1-3, yes, they do.

4-9, yes, all are fine.

1. Parrots imitate human speech.

2. Parrots mimic human speech.
3. Parrots copy human speech.

These three statements have the same meaning. They all suggest that parrots have the ability to reproduce or replicate human speech by imitating or mimicking it.

4. Can I ask you to take a picture of us?
5. Can I ask you to take a photo of us?
6. Can I ask you to take a photograph of us?

All three of these sentences can be used interchangeably. The words "picture," "photo," and "photograph" all refer to capturing an image using a camera. Asking someone to take a picture, photo, or photograph of you is the same thing, just using different words.

7. Can I ask you to take pictures of us?
8. Can I ask you to take photos of us?
9. Can I ask you to take photographs of us?

Similarly, all three of these sentences can be used interchangeably. The plural forms "pictures," "photos," and "photographs" are used when you want the person to take multiple images of you or a group of people.

In summary, all the expressions can be used in their respective contexts, and they have similar meanings. The choice between "picture," "photo," or "photograph," as well as the plural forms, depends on personal preference or the specific context in which they are used.