English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
ERRORS
We sat down and started the exam under the ~eagle eyes~ of the lecturer (nonstandard).
We sat down and started the exam under the eagle eye of the lecturer (standard). A person who notices everything, including very small details, is said to have an eagle eye.
One day, out of the ~blues~ , she announced that she was leaving (nonstandard).
One day, out of the blue , she announced that she was leaving (nonstandard).
If something happens out of the blue, it is completely unexpected.
GAB
I’m Habeeb