The past participle of "must" is "musted."
The modal verbs do not have past participles: * can * may * must * shall * will
STOPThe past participle is STOPPED.Example: The boy was running, and then he stopped.The future participle is STOP.Example: Tomorrow, you will stop.The present participle is STOPPING.Example: The boy is stopping.The infinitive is STOP.Example: You must know how to stop.
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of "am not" is "have not been."
The past participle of "do" is "done."
There is no past participle. The idiomatic construction "have to" means "must" and is used as an auxiliary verb. (The verb to have has the past tense had and the past participle had.)
The modal verbs do not have past participles: * can * may * must * shall * will
The past participle is Hiked. Hike is a regular verb that doesn't change when it is in the past participle. You only must add Had. Example: Present: I hike in the woods Past: I hiked in the woods. Past participle: I had hiked in the woods.
STOPThe past participle is STOPPED.Example: The boy was running, and then he stopped.The future participle is STOP.Example: Tomorrow, you will stop.The present participle is STOPPING.Example: The boy is stopping.The infinitive is STOP.Example: You must know how to stop.
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of "am not" is "have not been."
To change the past tense and past participle of a verb, you must either change the verb back to its present tense or get rid of its suffix.
The past participle of "do" is "done."
The past tense of "have" is "had," and the past participle is also "had."
The past participle of the word "have" is "had."
The past participle of "will" is "willed."
The past participle of "am, are, is" is "been."