The capital letters of the 26 English letters are: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.

The pronunciation of these 26 English letters is as follows:

【ai:】、【bi:】、【si:】、【di:】、【I:】、【ef】、【d？ i:]、[eit∫]、[ai]、[d？ ei]，[kei]，[el]，[en]，[u]，[kju:]，[es]，[ti:]，[ju:]，[vi:]，[' d∧blju:]，[eks]，[wai]，[zi:].

History of the English alphabet:

In the Anglo-Saxon era of the sixth century, English began to become a written language. At that time, it was Roman Catholic missionaries who were responsible for recording the local oral language into words. The problem they face is that English (that is, old English) has more than 40 different pronunciations, but they only have 23 Roman letters (there were no J, U, W U and W at that time), so they can't correspond to each other.

So they tried many different methods, such as adding letters, adding phonetic symbols to letters, connecting two letters and so on to correspond to different pronunciations, and gradually formed 27 letters and some spelling rules of old English.