Adverb Clause
“A dependent clause that functions as an adverb in a sentence is called adverb clause”
An adverb clause like an adverb modifies a verb, adjective clause or other adverb clause in a sentence. It modifies(describes) the situation in main clause in terms of “time, frequency (how often), cause and effect, contrast, condition, intensity (to what extent).”
The subordinating conjunctions used for adverb clauses are as follows.
Time: when, whenever, since, until, before, after, while, as, by the time, as soon as
Cause and effect: because, since, now that, as long as, so, so that,
Contrast: although, even, whereas, while, though
Condition: if, unless, only if, whether or not, even if, providing or provided that, in case
Examples.
Don’t go before he comes.
He takes medicine because he is ill.
Although he tried a lot, he couldn’t climb up the tree.
Unless you study for the test, you can’t pass it.
I will go to the school unless it rains.
You are safe as long as you drive carefully.
You can achieve anything provided that you struggle for it.