Sentence Structure with "since"
I have a question concerning sentences using since. My understanding is that since has to be used with the present perfect, and I would like to know if the sentences below are correct.
1. Don't take a PCR test until 90 days have passed since the positive results came out.
In this sentence (1) I have constructed my sentence the way that it should be constructed when using since; that is, I have the present perfect and then since in a clause in the past tense. I think I am correct. (?)
2. Don't take a PCR test for 90 days from the date you received your positive results.
Here, I am using for and from. Is this sentence correct? Does it carry the same meaning as sentence # 1?
3. Don't take a PCR test for 90 days until 90 days pass from the date of your positive results.
Here I am using my sentences solely in the present tense. Is this sentence correct?
Please let me know if there is a mistake in any of my sentences.
Top answer
apatzinguense for 90 days until 90 days pass This phrasing in sentence 3 is awkward. You should fix that one. Your other two sentences are correct.
- apatzinguense for 90 days until 90 days pass This phrasing in sentence 3 is awkward.
- You should fix that one.
- Your other two sentences are correct.
- CJ
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apatzinguensefor 90 days until 90 days pass
This phrasing in sentence 3 is awkward. You should fix that one.
Your other two sentences are correct.
CJ
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