现在完成时语法现在完成时already,ever,for,just,never,since,yet的用法

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现在完成时语法现在完成时already,ever,for,just,never,since,yet的用法现在完成时语法现在完成时already,ever,for,just,never,since,ye

现在完成时语法现在完成时already,ever,for,just,never,since,yet的用法
现在完成时语法
现在完成时
already,ever,for,just,never,since,yet的用法

现在完成时语法现在完成时already,ever,for,just,never,since,yet的用法
现在完成时表示动作过去开始,但持续到现在,或过去发生的动作,对现在产生后果或影响.常和for+一段时间,already,ever,never,just,yet,in the past few years/ over the last thirty years,so far,up to now,since 1980等状语连用.
例如:Most college students have learned English for more than six years.Great changes have taken place in China in the past few years.I have never been abroad up to now.
注：表示短暂行为的动词不能和延续性时间状语连用.
如:I have been back from England for over two weeks.或It has been over two weeks since he came back from England.

already 已经
ever 曾经
for just 刚刚
never 从不
since 自从
yet 至今

already造句用现在完成时现在完成时语法现在完成时already,ever,for,just,never,since,yet的用法现在完成时, 现在完成时! 句中有already就是现在完成时吗? 关于现在完成时的语法现在完成时的语法现在完成时语法有哪些现在完成时语法讲解. 现在完成时的语法现在完成时语法大全现在完成时语法初一的,越多越好! 求分析现在完成时一系列语法语法填空如何判断现在完成时 already是什么时态?过去时还是现在完成时? 现在完成时中,怎么区分already 和 just I have already had lunch.--为什么在already前要加have,下面不行吗?I already had lunch,--这句是不是语法不对啊,本人语法忘的差不多了.I have already had lunch.--------------------------现在完成时,不用加already也英语初二下册现在完成时是语法