যে সকল বাক্যে একটি প্রধান খন্ড বাক্য থাকে এবং তার উপর আশ্রয় বা অবলম্বন করে আরও এক বা একাধিক খন্ড বাক্য থাকে তাকেই Complex sentence জটিল বাক্য বা মিশ্র বাক্য বলে।
It consists of one main clause and one or more subordinate clauses or adverbial clauses.
1. Adverbial clauses come after the main clause.
His mother died (Main clause)
When (subordinating conjunction)
He was two years old. (Adverbial clause)
Here, ‘if you read regularly’ is a subordinate clause and ‘you will do well in the exam’ is the main clause.
2. The best way to detect Subordinate clause is that it always begins with conjunctions like where, what, when, that, while, who, if, whether, because, whenever, whoever, whatever, wherever, though, although, till, until, unless, after, before, so that, etc.