恳求各位大佬帮我分析一下，这几句英语句子的句型结构是什么样的？

Question

I e-mailed DJ Shiftee, a well-known New York City DJ, when I was 25: “I know you like a challenge. How about teaching a deaf person to deejay?”
二十五岁的时候，我就给著名的纽约城打碟师谢夫迪发了电子邮件。我写道：“我知道你喜欢挑战。教教一个聋子做打碟师怎么样？”
主语从句

He wrote back the next day: “Challenge accepted.”
第二天他就回复了：“接受挑战。”

He tutored me twice a week for two years, helping me develop correct technique.
他每周两次给我做个别辅导，时间长达两年，帮助我掌握正确的技巧。

I practiced four hours a day. Now when I’m performing, muscle memory takes over.
我每天都会练习四个小时。如今我表演时，各种动作已变得流畅自如。

Answer 1

I e-mailed DJ Shiftee,【主句】 a well-known New York City DJ, 【同位语】when I was 25【时间状语】: “I know you like a challenge. How about teaching a deaf person to deejay?”【直接引语/也就是谓语动词e-mailed的宾语从句】。

He wrote back the next day:【主句】 “Challenge accepted.”【直接引语/也就是动词wrote back的宾语从句】。

He tutored me twice a week for two years,【主句】 helping me develop correct technique.【现在分词短语作伴随状况】。

辅音

（注：多数辅音的读音与拼音差别不大，可以通过拼音来进行谐音；还有一部分辅音没有对应的拼音字体，这里我们主要是针对/θ ð ʃ ʒ/这四个辅音）其中，/θ/和/ð/这两个音标，它们并没有相近似的拼音来对应，主要是靠嘴形来记忆。

/θ/――上下牙齿咬着舌头尖，发“斯"的音；/ð/――舌头顶上牙堂发拼音z一声；/ʃ/――师；/ʒ/――牙齿闭合，舌头虚碰牙齿发拼音r一声。

Answer 2

I e-mailed DJ Shiftee,【主句】 a well-known New York City DJ, 【同位语】when I was 25【时间状语】: “I know you like a challenge. How about teaching a deaf person to deejay?”【直接引语/也就是谓语动词e-mailed的宾语从句】
He wrote back the next day:【主句】 “Challenge accepted.”【直接引语/也就是动词wrote back的宾语从句】
He tutored me twice a week for two years,【主句】 helping me develop correct technique.【现在分词短语作伴随状况】
Now when I’m performing,【时间状语】 muscle memory takes over.【主句】

Answer 3

你问的是哪一句