英语中的八种时态及其谓语动词的变化和标志词如下：

一般现在时

谓语动词形式：

动词原形（第三人称单数时加-s或-es）

标志词：always, usually, often, sometimes, seldom, hardly ever, never, every, each, either, neither, one, none, so far, recently, according to, as well, on Mondays, Wednesdays, Fridays, etc.

一般过去时

谓语动词形式：

动词的过去式

标志词：yesterday, last week, last month, last year, ago （one hour ago, two days ago, etc.）, in 1989, the morning of August 8th, 2001, during the meeting, before the meeting, after the meeting, by the end of last week, at that time, in the past, once upon a time, in the old days, in 1860, when I was a child, when she was in school, etc.

一般将来时

谓语动词形式：

will do, be going to do

标志词：tomorrow, the day after tomorrow, next week, next month, next year, in the future, after tomorrow, in the morning, in the afternoon, in the evening, soon, then, later, immediately, at that moment, on the day after tomorrow, in a few days, in the near future, in the distant future, etc.

现在进行时

谓语动词形式：

am/is/are + doing

标志词：now, at the moment, this time, currently, at present, on the way, in the process of, at that moment, at this time of yesterday, yesterday afternoon, etc.

过去进行时

谓语动词形式：

was/were + doing

标志词：at that moment, at this time of yesterday, yesterday afternoon, last night, in 1989, two days ago, during the meeting, before the meeting, after the meeting, etc.

过去将来时

谓语动词形式：

would do, should do, could do, might do, will have done, would have done, should have done, could have done, might have done

标志词：in the past, yesterday, last week, last month, last year, in 1989, the morning of August 8th, 2001, during the meeting, before the meeting, after the meeting, etc.

现在完成时

谓语动词形式：

have done, has done, had done, have been doing, has been doing, had been doing

标志词：already, just, yet, ever, never, recently, so far, already, just, yet, ever, never, recently, so far, in the past, yesterday, last week, last month, last year, ago （one hour ago, two days ago, etc.）, since, for, already, just, yet, ever, never, recently, so far, in the past, yesterday, last week, last month, last year, ago （one hour ago, two days ago, etc.）, since, for, until, when, while, before, after, as soon as, because, since, if, unless, whether, however, so that, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so, therefore, thus, so