The present study examined the relative effects of discourse-based and sentence-level grammar instruction on the learning of English present perfect in academic writing, using a sequential explanat...

中文翻译：

---

ESL 学术写作中基于话语的语法教学：混合方法研究

本研究采用顺序解释法，探讨了基于语篇和句子级语法教学对学术写作中英语现在完成时学习的相对影响。