It doesn’t matter what kind of writer you are, keeping your grammar skills sharp is important. To that end, let’s review the conjunction “as.”
Conjunctions are simple words with a big role. They provide clarity and link ideas. However, they are also often misused. I see words and sentences linked by weak conjunctions all the time. Weak conjunctions may not be grammatically incorrect, but they create ambiguity and confusion. They are not as effective as a strong conjunction.
A popular weak conjunction I see often is the use of “as.” Here is an example:
“Replace both headlights at the same time, as it is likely that the other headlight will soon burn out too.”
The use of “as” in this way means a casual effect. It is grammatically correct, but “because” is a stronger conjunction to specify reason and motive.
“Replace both headlights at the same time, because it is likely that the other headlight will soon burn out too.”
A correct use of “as” is to show simultaneity, comparison, and sameness and to introduce a clause.
“I will hold the light as you loosen the bracket.”
“This brand of headlight is as effective as that brand.”
“I am going to teach you how to do this, just as my daddy taught me.”
“As you will see, it is quite easy.”
For information on other weak conjunctions, check out K.M. Weiland’s blog post “Most common Writing Mistakes, Pt. 49: Weak Conjunctions.”