Question

现在完成时的标志有什么

Answer 1

用现在完成时的句子：到现在为止已经怎么怎么样了、到现在为止已经多长多长时间了、从来没有做过某事。比如下面几个句子：
1 我们已经学了500个单词了。
2 我生活在这个城市已经15年了。
3 我还从来没有去过香港。

Answer 2

现在完成时的常用标志词有哪些呢

Answer 3

现在完成时讲解
结构：主语+助动词have/has+过去分词(done)
句型：否定句：主语+have/has+not+过去分词+其他.
一般疑问句：Have/Has+主语+过去分词+其他.
简略答语: Yes,主语 + have/has.(肯定)
　　 No,主语 + haven't/hasn't.(否定)
用法：现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果
I have spent all of my money (so far).(含义是:现在我没有钱花了.)
Guo zijun has (just/already) come. (含义：郭子君现在在这儿)
My father has gone to work.(含义是:我爸爸现在不在这儿)
标志　　
* 以already, just和yet为标志
He has already got her help.　。
He has just seen the film.　
He hasn't come back yet.　
* 以ever和never为标志　
This is the best film I have ever seen.　
He has never been to Beijing.　
* 以动作发生的次数为标志　　
He says he has been to the USA three times.
* 以so far（到目前为止）为标+before
She has passed the exam so far.　到目前为止她已经通过了考试。
* 以for+一段时间状语/since+过去时间点为标志
I have been a teacher for 3 years
I have come here since 2008