2) present perfect tense
现在完成时
1.
Based on real linguistic data,the paper clarifies the diminishing path of present perfect tense inthe Shanghai dialect,which is mainly focused on its historical stratum overlap.
本文以现实的语料,说明上海方言中一种语法形式——现在完成时态在历史层次覆盖意义上的具体消亡过程,及其在被替换过程中的种种连续过渡现象,并讨论它的理论意义。
2.
As one of the most important and confusing grammatical tenses in high-school English,present perfect tense brings about much perplexity to both teachers and students.
现在完成时态是中学英语语法中的重点和难点,经常给师生带来困惑。
3) present perfect
现在完成时
1.
The present perfect has been important and difficult in English grammar because the system of tense/aspect is totally different from that in Chinese.
现在完成时历来是语法中的重点和难点。
6) future perfect progressive
将来完成进行时
补充资料：时发时散翳
时发时散翳 时发时散翳 病证名。见《一草亭目科全书》。即聚开障。详该条。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条