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It's an auxiliary verb (for the Future Simple) and a modal verb, with no present Past or Past Participle forms (although SHOULD might have been a Past form in the past, so to speak). )
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∙ 11y ago
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What is the past participle of shall?
The modal verbs do not have past participles: * can * may * must * shall * will
Shall be discussed later is correct or Shall be discuss later?
"Shall be discussed later" is correct. "Discuss" should be in the past participle form, which is "discussed" in this case.
What is the past participle of do and have?
The past participle of "do" is "done." The past participle of "have" is "had."
What is the past participle of am not?
The past participle of "am not" is "have not been."
What are the rules in forming perfect tenses?
The perfect tenses are formed by using the auxiliary verb "have" followed by the past participle of the main verb. For example, in the present perfect tense, you use "have" or "has" followed by the past participle. In the past perfect tense, you use "had" followed by the past participle.
What is the past participle of the did?
The past participle of "do" is "done."
What is past and past participle of have?
The past tense of "have" is "had," and the past participle is also "had."
What is the past participle of the word have?
The past participle of the word "have" is "had."
What is the past participle of am are is?
The past participle of "am, are, is" is "been."
What is the past participle of will?
The past participle of "will" is "willed."
What is the past participle of thinking?
The past participle is thought.
What is the past participle of to and be?
The past participle of "to" is "been." The past participle of "be" is also "been."
