present perfect 现在完成时?如果是 又用那些单词 句型是什么give me example

present perfect progressive 现在完成进行 和present perfect 有什么区别present perfect 加has/have+past participle 而present perfect progressive has/have+been+verb+ingparticiple 过去分词 现在完成进行时：The present perfect continuous是这样写的嘛? present perfect The future Perfect Continuous Tense 用法 .过去完成进行时 the past perfect continuous tense用法1.一般现在时 the present tense 2.一般过去时 the past tense3.一般将来时 the future tense5.现在进行时 the present continuous te present perfect simple and present perfect continuous Present simple,present continuous,present perfect simple,present perfect continuous present perfect continous是什么 present perfect是什么意思 The present perfect tense 什么是PRESENT PERFECT CONTINUOUS啊? Rewrite the following sentences with the present perfect continuous(改写以下句子,用现在完成进行时)①I have worried about the operation.(for a month)__________________________________________________②Sam has talked to his neighbor abo present continuous tense 跟present perfect continuous tense的混乱两个都是指已完成一些东西..但还要继续做那该用哪一个?我好乱 write the sentence in the present perfect 用present perfect tense ,simple past tense , 求 4 个 present perfect progressive 句子 求 4 个 present perfect progressive 句子.. the present perfect tense的中文 present perfect;：indefinite past有一本英语语法书现在这个单元是 present perfect：indefinite past 请问这是什么语法?我想知道这个单元要讲的是什么意思 因为已经讲过present perfect了,为什么还要加一个i