I
1.许多尺牍书里说不可用I开首。可是在事实上英美人写信经常用I开首。在信里用I过多，当然不好，但故意避免I是无意识的，要是为了故意避免I而弄得开首不自然，更加不好。
2.在日记和给熟人的信里往往把I省去。例如：
Received letter from Tom.
Joggod along the waterfront this morning.
Hope to hear from you soon.
在口语里也往往省去I。
3.between you and I是英美人常有的错误，该把I改作me。
4.习惯说he and I，my brother and I等，不说I and he和I and my brother等。但在承认错误的时候往往先说I，如I and he are to blame和I and my brother made the mistake。
