01 Have you ever had an unhappy haircut experience?
相信大家应该都有过“不开心的理发经历”，所以首先可以给一个肯定回答。除了说Yes 之外，还可以用absolutely, definitely, 还可以加一个Oh 表示感慨。
然后稍微解释一下过程或个人感受。因为是Part 1，没有必要描述的绘声绘色。简单描述一下自己为什么不开心即可，大多数的原因都是理发师“技术不过关” (unskilled) “态度不行 (bad attitude)，或者没达到自己预期的效果 (the hairstyle is not the way you like/expect) 之类的。稍微解释即可。
Oh absolutely, I have had many terrible haircut experiences, and each time when the hairstyle is not the way I like, I would feel really disappointed and even sad because it's really about your image. Having a bad haircut is like having a bad image, which can be really depressing because you have to go to school or work with that ugly haircut. So I think a good barber is really important.
it's really about your image，关乎个人形象
02 How long have you had your current haircut?
比如“我在上海已经住了5年了”，英语是 I have lived in Shanghai for 5 years.
I have had my current haircut for about 2 weeks, because my hair grows very quickly, if I don't do anything about it in one month, I would look very disheveled and untidy. To avoid that from happening, I would usually go to a barber's shop once a month, and last time I had my hair cut about two weeks ago, so I have had my current haircut for 2 weeks.
if I don't do anything about it 比较口语但是地道的表达
disheveled and untidy 类似于中文里的“蓬头垢面”
avoid sth from happening 避免...的发生
go to a barber's shop 可以当作是 have a haircut 的同一替换，避免一直重复
04 How often do you have a haircut?
回答时可以先正面给答复，once a month, once in 3 weeks, twice a year 等等类似的词组。
Well like I just mentioned, I usually cut my hair once a month. I remember there was one time when I didn't cut my hair for almost two months, and I looked terrible, some of my friends could not even recognize me. At that time I then realized that I should go to barber shops more frequently than before. And that's why I usually have a haircut about a month, sometimes even 3 weeks.
Like I just mentioned, 如果答案之前已经提到过，可以先说一句 as/like I mentioned before，之后再从不同的角度解释一遍。
04 Do you like having your hair cut?
如I like/ enjoy sth, I am really keen on ..., I have a passion for sth, I am passionate about..., I find it quite enjoyable 等等。当然每个句型不是100%可以替换的，稍微注意下语气的意思的区别就好。
之后的解释里可以联系个人经历和感受即可，因为haircut 其实还是比较personal 的话题，所以从内容来说不会“无话可说”，如果仍然感觉不流利需要在语言方面多下功夫。
Well for me, it's really a mixed feeling. On the one hand, I look forward to it because I hope to look fresh and anew, with a new cool hairstyle. On the other hand, I am worried that the barber is not that professional or careful, and that he would do a bad job, given the experiences that I have had before. So, in general, I enjoy having my hair cut as long as the barber is skilled and experienced enough.
a mixed feeling，复杂的心情
on the one hand, on the other hand, 一方面，另一方面
look forward to + doing 期待做某事，这里to是介词，需要加 ing
look fresh and anew，看起来焕然一新
as long as 只要