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native speakers of English!

I would like to know, are those sentences correct in English?

a. It has been 30 years since they met each other in the pub.

b. It is 30 years since they met each other in the pub.

c. It was 30 years since they met.....

d. It had been 30 years since they met....

e. He has taught the students since he was 23 years old.

f. He had taught the students since he was 23 years old.

g. His own mother has inspired him since he was a little child.

h. His own mother had inspired him since he was a little child.

i. He taught the students since he was...

j. His own mother inspired him since he was a little child.

my questions are:

a. Are these sentences correct and accepted in both American English and British English?

b. Could you tell me the differences between them?

c. When am I allowed to use "since" in a sentence? (What tenses can I use it?) (when can I use "since"?),

e.g. It has/had been/was/is 2 years since we have/had seen/saw/see each other

(or) It has/had been/was/is 21 years since they have been/had been/was/are separated by the walls.

These are all my questions, I wait for your answers! , thanks in advance!

closed as too broad by P. E. Dant, Em., Ben Kovitz, user3169, Nathan Tuggy Jul 2 '17 at 22:01

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • There are no grammatical differences here for BrE and AmE at all. That said some of your sentences are not grammatical at all. Frankly, you could do a little research on this with exercises and then ask questions. – Lambie Jul 2 '17 at 15:28
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    This is a proofreading question, and unfortunately we (or at least most of us) do not do proofreading here. Please edit your question to address a single issue. – P. E. Dant Jul 2 '17 at 16:50
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a. It has been 30 years since they met each other in the pub. - (correct)

b. It is 30 years since they met each other in the pub. - (understandable, (a) is better)

c. It was 30 years since they met..... - (correct, (d) is better)

d. It had been 30 years since they met.... - (correct)

e. He has taught the students since he was 23 years old. - (correct)

f. He had taught the students since he was 23 years old. - (correct, you will probably mention something else also)

g. His own mother has inspired him since he was a little child. - (correct)

h. His own mother had inspired him since he was a little child. - (correct)

i. He taught the students since he was... - (correct)

j. His own mother inspired him since he was a little child. - (correct)

You can use "since" anywhere in a sentence, the tense would probably be past, past perfect, past progressive since whatever it was happened in the past.

  • Hi @Peter, can I use since in the future and future perfect, like those examples e.g. It will be 2 years since he left us without saying anything (or) It will have been 2 years since he left us. – Aqsha Isham Jul 3 '17 at 0:49

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