When Passed and Past are Commonly Confused
Example 1: They walked passed/past an abandoned building.
Rewrite the sentence in the present tense. They walk pass the old house. Does it read correctly? Is another verb used in the sentence? If it doesn’t read correctly and there is another verb, then past would be correct as you need an adverb.
Example 2: They passed/past an abandoned building.
Rewrite the sentence in the present tense. They pass an abandoned building. Does it read correctly? Is another verb used in the sentence? If it reads correctly and there isn’t another verb, then the past participle (past tense) of to pass (passed) would be correct.
Passed is a verb in the past tense. As the past participle of the verb “to pass,” it can be an intransitive verb (doesn’t take an object) or a transitive verb (requires both a subject and one or more objects).
Example (intransitive verb): The days passed quickly. The subject is days, and there is no object.
Example (transitive verb): Thomas passed his final exam. The subject is Thomas, and the object is his final exam.
Example (transitive verb): Silas passed Nico the book. The subject is Silas, the direct object is the book, and the indirect object is Nico.