@iamthatenglishteacher: Starting a #sentence with the word when often requires a comma to separate the introductory #subordinateclause from the main clause. This quick lesson will explain how subordinate conjunctions like when create dependent clauses that cannot stand alone and why a comma is needed when the clause comes at the beginning of a sentence. Perfect for writers at all levels, this tip will sharpen your #sentencestructure skills and make your writing clearer and more professional. #when #commas #GrammarTips #SentenceStructure #CommaRules #commause #SubordinateConjunctions #WritingSkills #EnglishGrammar #ESLtips #GrammarForWriters #BetterWriting #WritingIdeas #CompositionWriting #helpwithwriting #improvewriting #writingcomp #EnglishWordsForEssay #writingtips #WritingVocabulary