run its course
Proceed to its logical or natural conclusion, as in The doctor said the cold would probably run its course within a week. This idiom employs course in the sense of “an onward movement in a particular path.” [Second half of 1500s]
Its vs. It’sOne confusing pair of words to write out is its and it’s. Its is a possessive form of it, meaning belonging to it. It’s is a contraction of the words it is or it has. To figure out which is correct for your sentence, just swap in “it is” and then “it has“. If the sentence makes sense with either of those substitutions, use it’s. If the resulting …
How To Cut Down Run-On SentencesA run-on sentence is a sentence where two or more independent clauses have been incorrectly joined together. An independent clause contains both a subject and a verb and can stand on its own as a complete sentence. Some examples of independent clauses include “Jane ate dinner,” “John went to the store,” and “Sue made a pie.” Comma Splices A comma splice is a grammatical error …
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.