英语高手来下this is my first time that 后面是用什么时态,有人有一般时也有人用现在完成时的,究

为什么“this is the first time i have baked it"为什么后面用现在完成时? 老师在讲“This is the first time that...”句式用法时,说that从句要用“现在完成时”. by the time 后面接什么时态时主句是用现在完成时?例子? this is my first time 后面跟什么 this weekend 有那个从外国回来的告诉我 this weekend 用什么时态有人说是现在有人说是过去到底是什 at this time后面用什么时态 It is time that 和it is high time that怎么用什么区别后面加的时态 It was for the first time that后面从句用什么时态 This/It is the first/second time＋that从句,that从句谓语为什么要用现在完成时 it is time that 后面是接什么时态? this is the first time this was the first time 怎么用,有什么区别? it is the second time 后为什么用现在完成时呢?如果把is 改成was 后面用什么时态呢?