I can speak and write good English and would like to try my hand as a writer.

我可以说，写良好的英语，并愿尽我的手作为一个作家。

youdao

If an English learner has a wide knowledge and a clear understanding of the grammar rules, does it guarantee that he or she will definitely be able to speak and write good English?

假如一位学习者对英语的语法有充分的了解，那能不能保证学习者肯定能写及说标准的英语呢？

youdao

Good at communication in English (read, write, listen and speak).

良好的英语沟通能力(读、写、听、说)。

youdao