Problems existing in teaching implementation.

Problems after teaching.

Supplement:

Task design, teaching implementation and post-teaching refer to three steps of teachers' teaching activities, and it is best to translate them into equivalent English words.

The language used in this article is formal.

A: Problems in task design.

Problems existing in teaching implementation.

On the issue of teaching.

Added:

Task design, teaching and teaching are the three steps of teaching. It is best to translate the same number of words in these three aspects into English.

The language used in the paper is formal.