A 形式
主要变化形式:have,had,had
动名词/现在分词:having
现在时:
否定式的另一种缩略形式(主要用于完成时): Ive not,
youve not,hes not等
否定疑问式:have I not?/havent I? have you not? havent you?hashe not?/hasnt he?等
have的其他时态变化规则,与普通动词的相同。
B 用于构成时态
have与过去分词连用,构成以下时态:
现在完成时:I have worked.
过去完成时:I had worked.
将来完成时:I will/shall have worked.
条件完成时:I would/should have worked.
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