现在完成时的标志词是什么？

Question

如题所述

Answer 1

1、already

用在肯定句中（be动词、助动词、情态动词之后，实意动词之前）常与yet进行转换。例如：I have already finished the work。我已经完成这项工作了。 改为否定句：I haven't finished the work yet。我还没有完成这项工作。改为一般疑问句：Have you finished the work yet?

2、yet

放在否定句和一般疑问句句末。

其他的标志词：just, before, recently,still, lately, never, ever, twice, on several occasions, in the past/last few days/weeks/months/years, (up to)these few days/weeks/months/years,this morning/week/month/year。

3、before

表示之前发生的事情，放在句末

例如：I have been to this place before.我之前去过了这个地方。

4、just

表示刚刚做过的事情，放在have/has后面

例句：I have just cleaned my room.我刚刚清理了我的房间

5、ever

表示经常的或习惯性的动作，常与表示频率的时间状语连用。放在have/has后面，动词后面

例句：Their debts have grown ever larger。他们的债务不断增加。