I saw Tom yesterday.He ( )from England already.A.have been c
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I saw Tom yesterday.He ( )from England already.A.have been caming B.has come 为什么选B不选A
B 是现在完成式,不及物动词come 的完成式表示动作已经完成并对现在造成的影响.
A是现在完成进行式 表示这一动作从过去开始到现在还在继续,而且不及物动词come 也不可以表延续,用于这一时态.
再问: 现在完成时式的句子是不是可以不用表示延续性的动词?
再答: 及物动词和不及物动词都可以用于现在完成式。但是不及物动词不可以表延续,当然也不可以和表延续的时间连用。就比如说 he has come. (come 不及物动词,不可以和表延续的时间连用,如for two days) 但是如果是可延续性动词就可以和表延续的时间连用。如he has studies English for two day. study 是延续性动词。
A是现在完成进行式 表示这一动作从过去开始到现在还在继续,而且不及物动词come 也不可以表延续,用于这一时态.
再问: 现在完成时式的句子是不是可以不用表示延续性的动词?
再答: 及物动词和不及物动词都可以用于现在完成式。但是不及物动词不可以表延续,当然也不可以和表延续的时间连用。就比如说 he has come. (come 不及物动词,不可以和表延续的时间连用,如for two days) 但是如果是可延续性动词就可以和表延续的时间连用。如he has studies English for two day. study 是延续性动词。
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