The phrase 'unexpected assignment' is correct and usable in written English.
You can use it to describe a task that was assigned suddenly or without prior notice. For example, "Our professor gave us an unexpected assignment to complete a 10-page research paper by the end of the week."
Bridgman credited an unexpected teaching assignment in 1914 for his first real encounter with special relativity, which gave him considerable distress as he tried to clarify the confusing conceptual situation surrounding the theory (Bridgman in Frank 1956, 76).
Why We Love It: Her DAD posted her "unexpected response" to the "assignment" on Reddit.
In addition, when students' performance on an assignment was unexpected, I did not use language of "you all" or "you" or "they," rather it was about "we".
This is not unexpected because the qualitative assignment of fish to individual life history categories is heavily influenced by subjective judgment of body coloration and morphology.
An unexpected complication in the assignment of PBD phenotypes to any particular complementation group is the fact that different complementation groups share similar clinical phenotypes (Moser et al., 1995; Steinberg et al., 2006).
Allow yourself at least this much time in your schedule, and consider allotting a fair amount more to compensate for unexpected complications or additional assignments.
Those translations are suddenly in great demand and short supply; the Nobel committee has given American readers another unexpected and vaguely exotic homework assignment.
For example, consideration of the probability that a sample pertained to either one of the two components of the mixture model used to describe the sub-network of gene CDC5 confirmed some expected assignments and suggested unexpected commonalities between samples.
But there is little doubt that an unexpected obstacle to General Allen's new assignment at NATO was the inquiry by the Pentagon inspector general.
Unlike being an employee, in freelance business, assignments may come at unexpected times and often in lots.
