Grammarly checks faulty sentences for punctuation mistakes
We asked Grammarly to check some “faulty” sentences for punctuation mistakes, such as run-on or fused sentences (ROS), comma splice cases (CS), and sentence fragments (SF):
Grammarly performed well and managed to identify most cases of ROS, CS, and SF, as well as some other issues (e.g., a missing article and missing commas in the last example):
However the tool did miss a few errors:
It also made a silly suggestion, in the last sample, to change the conjunction “and” to the indefinite article “an.”
Text used in the experiment: these sentences were devised by the convenor of an undergraduate writing course at Auckland University, to test student knowledge on common syntax and punctuation mistakes. To use these sentences for a classroom activity, visit Exercises. To download them as as a .docx file, click here.