请教各位英语达人i have come to the conclusion,这句话中是什么时态啊?是现在完成时吗?如果是

请教各位英语达人i have come to the conclusion,这句话中是什么时态啊?是现在完成时吗?如果是 We haven't come to a conclusion yet.这个句子是现在完成时吗? I have just come back.是现在完成时吗?如果是,那come为什么不用过去分词? 翻译：我得出了一个结论,是用 I come to the conclusion that还是 I came to the 我得出了一个结论,翻译是用 I come to the conclusion that还是 I came to the 翻译 我得出了一个结论,是用 I come to the conclusion that 还是 I came to th I have come to say goodbye(to you).这句话中的have come to 怎么去理解?是 i've come to your time to find out 这里面的have come是现在完成时么? have been to是延续性动词吗?如果不是,那么在现在完成时里这句话里有since,能用have been to吗 请教英语达人,这句话应怎样理解?Pay?I thought i didnt have to pay!I'll think have been to是延续性动词吗?如果不是,那么在现在完成时里这句话里有since能用have been i listen to the music 这句话是什么时态?