在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式,动名词,和分词(分词包括现在分词和过去分词)。
1)不定式
时态语态 主动 被动 一般式 to do to be done 完成式 to have done to have been done
2)动名词
时态语态 主动 被动 一般式 doing being done 完成式 having done having been done
3)分词
时态语态 主动 被动 一般式 doing being done 完成式 having done having been done
否定形式: not +不定式, not + 动名词, not + 现在分词
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