on sundays是什么时态标志词

on sundays是什么时态标志词（精选3篇）

on sundays是什么时态标志词 篇1

1.since作为介词，后接某一确定的时间点，主句谓语动词是持续性动词，常与现在完成时态、现在完成进行时态或过去完成时态连用。

例如：He left the village in 1982 and I haven’t seen him since then.

1982年他离开这个村子，从那以后我再没见过他。

2.since作为副词，表示从过去以来、以后或到现在的情形或状态，常与现在完成时态连用。

例如：He left home two weeks ago and we haven’t heard from him since.

他两周前离开了家，到现在我们一直没有他的`消息。

3.接时间点(谓语动词用现在完成时，而且须是延续性动词。)

例如：I have stayed in that country since 1995.

自从1995年以来我一直呆在那个国家。

4.接一段时间+ago(谓语动词用现在完成时，而且须是延续性动词。)

例如：They have lived in that house since two years ago.

他们两年前就住在那所房子里了。

5.接时间状语从句(主句的谓语动词用现在完成时，而且须是延续性动词;从句的谓语动词用一般过去时，而且须是终止性动词。)

例如：(1)I have loved her since I met her last time.

自从我上次见到她以来，我就一直爱着她。

(2)Lily has stayed at home since she left school.

英语时态结构,标志词总结 篇2

⑴、一般现在时

结构：主+be(am/is/are)+其他/ 主+实义动词+其他/ 主+情态动词+动原+其他

标志词：often, always, usually, sometimes , every week(day/year/month…), once a week, on Sundays,语境：经常

⑵、一般将来时

结构：主+will/shall+其他/主+be going to +其他/主+be+动-ing+其他…

标志词：tomorrow, next week , after tomorrow，in+ 一段时间,soon，from now on 语境：将要

⑶、一般过去时

结构：主+be(was/ were)+其他/ 主+动词过去式+其他/

标志词：一段时间＋ago,yesterday, in 1945，at that time，once，during，before,in the past , the day before yesterday, last系列, just now,语境：当时/了

⑷、现在完成时

结构：主+have/has+动词过去分词+其他

标志词：ever, never, since, already, yet, just, before, twice, once ,three times, at the moment, at present/for+时间段；since+时间点/常见的副词：lately，recently，up to now, till now,so far, these语境:现在已经

⑸、现在进行时

结构：主+be(am/is/are)+动词现在分词+其他

标志词：now,at the moment!at this time ,these days ,语境:现在正在⑹、过去进行时

结构：主+be(was/ were)+动词现在分词+其他

标志词：at that moment, , at eight last night，at 8:00am yesterday，语境:当时正在⑺、过去完成时

结构：主+had+动词过去分词+其他

标志词：by the end

⑻、过去将来时

结构：主+would/should+其他/主+was/were going to +其他

标志词：the next day/morning/year，year/week/month

were是什么时态4 篇3

所有的统计计算均由新的软件系统完成。

A number of measures were taken to alleviate the problem.

采取了一系列措施缓解这个问题。

No payments were made last week because of a computer error.

由于计算机出错，上周未付任何款项。

Things were going fine until you showed up.

你一露面就把事情搞糟了。

The experiments were carried out under simulated examination conditions.