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  • I wrote in my post. the sentence comes from Dictionary sentence example. then you decide if it can be a typo!. A typo? in a Dictionary? [ Fat chance ]. 

    Anyway, How would you substantiate your answer grammatically?

    • I mean the sentences are correct, but sometimes regardless the punctuation. :)

    • Hi Reza,

      Yes, that's why I asked if there any another sentence like that in the dictionary. I found mistakes and lacks in dictionaries, on example sentences. If we want to learn about writing, we'll better refer to grammar book instead of dictionary.

      As I learnt from book....

      When you attach a subordinate clause in front of the main clause, use a comma.

      You can see this source if you want to know more.

      Subordinate conjunction: whenif, after, since, etc...

      See this source:

      http://www.chompchomp.com/terms/subordinateclause.htm

      or you can search all about "subordinate clauses and commas" 

      I just tell you what I've learnt, and I still learn, too.

      Grammar Bytes! :: The Subordinate Clause
      Grammar Bytes! Grammar Instruction with Attitude. Includes detailed terms, interactive exercises, handouts, and more!
  • Hi Reza,

    I think a comma should be there. Is there any same example like this? Or maybe it's just typo?

    "He flew Tornado jets" is the main sentence. So, it should be...

    When he was in the air force, he flew Tornado jets.

    or He flew Tornado jets when he was in the air force.

    I don't know if there any other answer. I would like to know it. Thanks. I like this topic. 

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