Anglais example sentences with "participle"

I'd like to ask a grammarian, isn't it possible to think of 'be + participle' like you do V C and such?
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In a progressive tense sentence it becomes the -ing form verb, that is the present participle.
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The past participle must agree with the direct object if the direct object precedes it.
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A participle is partly verb and partly adjective.
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In French, the past participle, when used with the auxiliary "avoir", never agrees with the subject of the verb.
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The part of a verb, that is partly a verb and partly an adjective, we call a participle.
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This sentence contains a participle.
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