1. Hold this pose, then return your leg to the ground and your arms to the sides.
2. Hold this pose, and then return your leg to the ground and your arms to the sides.
3. Hold this pose. Then return your leg to the ground and your arms to the sides.
4. Hold this pose. Then, return your leg to the ground and your arms to the sides.
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Which ones are grammatical? Are they all grammatical? Do we have to put a comma after 'Then'?
2 and 3 are correct.
1 through 3 are fine. No, you do not need the comma after "then". #2 does not need "AND" before "then", but it's not really wrong.
1 is not correct because "then" is not a coordinating conjunction. See your other post.
I disagree. I'm looking in Walsh:
"The conjunctive adverbs such as however, then, therefore, still<I/> also connect independent clauses."
... with semicolons.
Out of the four options given, all of them are grammatical. The use of a comma after 'Then' is a matter of style and personal preference. Here's a breakdown of each option:
1. "Hold this pose, then return your leg to the ground and your arms to the sides." This is a grammatically correct sentence. The phrase "Hold this pose" is followed by a comma, and then the instruction for returning the leg and arms is given.
2. "Hold this pose, and then return your leg to the ground and your arms to the sides." This sentence is also grammatically correct. The phrase "Hold this pose" is followed by the coordinating conjunction "and," which connects the two actions of returning the leg and arms.
3. "Hold this pose. Then return your leg to the ground and your arms to the sides." Similarly, this sentence is grammatically correct. Here, a period is used instead of a comma to denote a slight pause or a change in thought, but the structure and meaning remain the same.
4. "Hold this pose. Then, return your leg to the ground and your arms to the sides." This sentence is also grammatically correct. The addition of a comma after "Then" adds a bit more emphasis or separation between the two actions.
In summary, all of the given options are grammatically acceptable, and whether to use a comma or not after "Then" is a matter of personal style.