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Verb Forms | Grammar | EnglishClub

Helping verbs have even fewer forms as most of them never change. ... (2 forms), past participle, present participle, present simple (3 forms), #. be, was

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查詢 「past tense of help」的人也找了：

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  6. Call past tense
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  7. Tell past tense
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  8. Talk past tense
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