The UVic Writer's Guide

Reason is because

Never use this construction:

"The reason Doris couldn't come is because she lost her glasses."

"The reason is that" is correct, but the phrase's wordiness can be overcome by simply using because:

"Doris couldn't come because she lost her glasses."

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Copyright, The Department of English, University of Victoria, 1995
This page updated September 22, 1995