Subordinating Conjunctions

subordinating conjunction explanation

In all the examples in this lesson, the subordinate clauses (also known as dependent clauses) are highlighted. The subordinating conjunctions are all bold. Remember that the role of a subordinating conjunction is to join the subordinate clause to the main clause. (The main clause is always an independent clause, i.e., a clause that can stand alone as a sentence.)

Table of Contents

When a sentence has a main clause (an independent clause) and at least one subordinate clause, it is known as a complex sentence.

A List of Common Subordinating Conjunctions

Easy Examples of Subordinating Conjunctions

Find the Subordinating Conjunction Test

It's your go! Select the subordinating conjunction.

Real-Life Examples of Subordinating Conjunctions

More Examples Showing the Role of Subordinating Conjunctions

Here are some more examples of subordinating conjunctions in sentences. Remember that the role of the subordinating conjunction and subordinate clause is to establish a time, a place, a reason, a condition, or a concession for the main clause. This means the clauses in bold are all functioning as adverbs. They're all adverbial clauses.

Subordinating
Conjunction
CategoryExample
whereplaceI fish where the waves start to form .
whereverplaceI will live wherever the weather is good .
aftertimeI'm going out after the football has finished .
as soon astimeI'm going out as soon as the football has finished .
as long astimeI'm staying out as long as the weather stays good .
beforetimeI'm going out before the rain starts .
oncetimeI'm going out once the football has finished .
tilltimeI'm staying out till the weather turns bad .
untiltimeI'm staying out until the weather turns bad .
whentimeI'm going out when the weather improves .
whenevertimeI go out whenever the weather is good .
whiletimeI'll stay out while the weather is good .
asreason As it's raining , I'm staying in.
becausereasonI'm staying in because it's raining .
in order thatreason In order that I don't miss the postman , I'm staying in.
sincereason Since you're going out , I'm staying in.
so thatreasonI'm staying in so that I don't miss the postman .
even ifcondition Even if it rains , I'm going out.
ifcondition If it rains , I'm staying in.
in caseconditionI'm staying in in case it rains .
provided thatcondition Provided it doesn't rain , I'm going out.
unlessconditionI'm going out unless it rains .
althoughconcessionI'm staying in although I'd rather go out .
thoughconcessionI'm staying in though I wish I weren't .
even thoughconcessionI'm staying in even though the sun is out .
ascomparisonI'm staying in as you should .
just ascomparisonI'm staying in just as you should .
whereascomparisonI'm staying in whereas you are going out .
whilecomparisonI'm staying in while you are going out .

Why Subordinating Conjunctions Are Important

As a native English speaker, you don't need to worry about whether your subordinating conjunction is heading up a clause that establishes a time, a place, a reason, a condition, or a concession. You'll do that bit naturally.

The most common question related to subordinating conjunctions is whether to offset the subordinate clause with a comma or not. Here's the guidance.

(Point 1) Put a comma after a fronted adverbial clause.

(Point 2) Don't use a comma if your adverbial clause is at the back.

Okay, let's complicate the issue a bit. The rule that states "drop the comma when your adverbial clause ends a sentence" is not really a rule. In fact, the rule for post-positioned adverbial clauses (as they're called) is the same as for post-positioned adjective clauses. In other words, use a comma if the adverbial clause is nonessential (i.e., you'd happily put it in brackets or delete it). The problem is that it's flippin' way more difficult to decide whether an adverbial clause is essential or nonessential than it is with an adjective clause. As the vast majority of adverbial clauses are essential, it's pretty safe, but not entirely safe, to declare that a post-positioned adverbial clause isn't preceded by a comma. Read more about using commas with post-positioned adverbial clauses.

Key Points

This page was written by Craig Shrives.