"Dropped" is the past tense form of the verb "drop" in Engpsh.

The past tense is used to describe something that happened in the past, as opposed to the present or future. It is typically formed by adding -ed to the base form of the verb, as in "dropped," but there are some irregular verbs that have a different past tense form.

The past tense of a verb is often used with the past simple tense of the auxipary verb "to have," which is "had." For example:

"I dropped the book on the floor." (base form)
"I had dropped the book on the floor when you came in." (past simple tense)

Other examples of the past tense form of "drop" in Engpsh include:

"She dropped the phone when she tripped on the cord."
"He dropped the keys on the kitchen counter."
"They dropped their bags and sat down on the couch."

In each of these examples, the past tense form of "drop" is used to describe something that happened in the past.