This is the first time that I ______ really relaxed for months.

A.had felt      B.feel        C.felt           D.have felt

为什么选 D 而不选 B？一般现在时与现在完成时的区别(在the first time后面)？

回答如下：

完全赞同蒋老师的解答！

D为正确答案，从句应该使用现在完成时态。

以上句子可以总结如下2种结构/句型：

(1)This/That/It is the +（序数词first/second...) /one's time+主语 +have/has done sth

这是/那是/它是某人做某事情的第XXX次。(描述主语从过去某一时间到现在所经历做某事情的次数。）

It is the first time that I have written to a foreign pen friend. 

这是我第一次给外国笔友写信。

This is the first time in my life that I have taken part in such a grand celebration.

这是我有生以来第一次参加如此盛大的庆典。

This is the first time that the three leaders have met together and the first time that President Roosevelt has met Marshal Stalin.

这是三巨头的第一次会面，同时也是罗斯福总统与斯大林元帅的首次会面。

This is the first time that a study has set out to examine whether giving up smoking has impact on memory.

该研究首次着手检验戒烟是否对记忆有影响。

(2)This/That/It was the +(序数词first/second...)/one's time+主语+ had done sth

这是/那是/它是某人做某事情的第XXX次。（描述主语从过去某一时间之前所经历做某事情的次数。）

It was the third time that he had asked the same question. 

这是他第三次问同一个问题。

That was the second time I had listened to his lecture

那是我第2次听他的讲座。

It was the first time that he had stripped himself naked in her presence.  

他也第一次,在她的面前脱光了身子。

It was the first time that he had wept in nineteen years.  

他的心碎了,他哭了出来,那是他第一次流泪。

根据英语语法，在类似 It (This) is the first / second / third… time that…的句型中，that从句习惯上要用现在完成时。如：

Is this the first time that you have stayed here? 这是你第一次到这里来吗？

This is the first time that I’ve heard her sing.  这是我第一次听到她唱歌。

It is the first time that I’ve had occasion to complain. 这是我第一次有理由抱怨。

注意：如果主句是一般过去时，则that从句习惯上用过去完成时。如：

It was the first time that he had lost a game. 这是他第一次输掉比赛。

It was the first time that I had conducted business inBrazil.  那是我第一次在巴西做生意。