For I do not want any one to read my book carelessly. I have suffered too much grief in setting down these memories. Six years have already passed since my friend went away from me, with his sheep. If I try to describe him here, it is to make sure that I shall not forget him. To forget a friend is sad. Not every one has had a friend. And if I forget him, I may become like the grown-ups who are no longer interested in anything but figures. . .

It is for that purpose, again, that I have bought a box of paints and some pencils. It is hard to take up drawing again at my age, when I have never made any pictures except those of the boa constrictor from the outside and the boa constrictor from the inside, since I was six. I shall certainly try to make my portraits as true to life as possible. But I am not at all sure of success. One drawing goes along all right, and another has no resemblance to its subject. I make some errors, too, in the little prince’s height: in one place he is too tall and in another too short. And I feel some doubts about the color of his costume. So I fumble along as best I can, now good, now bad, and I hope generally fair-to-middling. In certain more important details I shall make mistakes, also. But that is something that will not be my fault. My friend never explained anything to me. He thought, perhaps, that I was like himself. But I, alas, do not know how to see sheep through the walls of boxes. Perhaps I am a little like the grown-ups. I have had to grow old.

我的疑问1：无动词分句：now good, now bad. 这里good和bad是副词

那么补全now I fumble along good as best I can, now I fumble along good as best I can. 我的分析对吗？如果是对的，那么along good 是不是副词修饰副词

我的疑问2：我问了其他英语的网友说这里good和bad 都是形容词，那么这里就是主语补足语。不全的话：Now, when I am good, I fumble along as best I can, now,  Now, when I am bad, I fumble along as best I can.对吗？

我的疑问3：I hope generally fair-to-middling. Fair-to-middling是副词吗？generally fair-to-middling也是副词修饰副词吗？