When if is place at the beginning of a sentence what part speech it?

When "if" is placed at the beginning of a sentence, it is a subordinating conjunction.

Here's why:

* Subordinating Conjunctions: These words connect a dependent clause (which cannot stand alone) to an independent clause (which can stand alone). They introduce a clause that provides more information about the main idea in the independent clause.

* Example: "If you finish your homework, you can watch TV."

* Dependent Clause: "If you finish your homework"

* Independent Clause: "You can watch TV."

* Subordinating Conjunction: "If" connects the two clauses and shows the relationship between them (condition).

Let me know if you have any other grammar questions!