1. Raise your head and bend backward.

2. Raise your head and bend it backward.
3. Raise and bend your head backward.
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Are they all the same in meaning and grammatical? Do they have any difference?

1. means to raise head and implies to bend body backwards

2. means to raise head and bend head backwards
3. same as 2

rfvv, I agree with "random guy", whoever he is. :)

All three sentences have the same meaning, which is instructing someone to raise their head and bend it backward. However, there are slight differences in their structures and emphasis.

1. "Raise your head and bend backward."
- In this sentence, "and bend backward" serves as a single instruction, implying that the person should bend their whole upper body backward, along with raising their head. The emphasis is on the overall movement.

2. "Raise your head and bend it backward."
- This sentence separates the actions more clearly, with "raise your head" and "bend it backward" being separate instructions. The focus is on the specific action of bending the head backward.

3. "Raise and bend your head backward."
- This sentence is similar to the second one, but the structure is slightly different. By using "raise and bend" together, it emphasizes that both actions should be done simultaneously. The emphasis is on performing the two actions together.

Overall, while there may be subtle differences in emphasis, all three sentences convey the same instruction to raise the head and bend it backward.