If I had to和If I have to的区别比如"If had to live my life whout you near me",为什么要用过去时?

If.I.Had.You if i had my If I had to和If I have to的区别比如If had to live my life whout you near me,为什么要用过去时? If I Had Eyes 歌词 If I Had You 歌词 If I Had One 歌词 IF I HAD YOU怎么样 if i had it my Even if i had to leave这句话是什么意思? I ( )(come)too if I had time if i have和if i had的用法举多点例子，要明显说出区别。 if i studied harder和 if i had studied harder 语义上有何差别 If I had 24 hours to live,If I cannot get togeter with you,I would stay with ___,I should ask them some questions.A should they come to us B if they come to usC were they come to us D had they come to us.这个题,选A是因为将来虚拟,如果C改成were they to come to us ,是不是也对?如果题干改成“I should hav if i had million dollars 英语作文 If I Had A Million Dollars 歌词 If I Had A Heart 歌词 if i had you 请问是什么意思?