英语语法，从句与主句的时态是一种什么关系？有没有特定的联系？从句与主句的时态可以一致吗？谢谢_百度知道
英语语法，从句与主句的时态是一种什么关系？有没有特定的联系？从句与主句的时态可以一致吗？谢谢
主复合句特别明显态区条件状语句间状语句几要求主现主祈现 &祈指祈使句主情现 &情指主句含情态词主句句要用或跟关态
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然而还有从句过去时主句过去完成时的情况，，，，，，，，，
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你可能喜欢动词的时态：比较since和for_英语语法词汇
& 动词的时态：比较since和for
动词的时态：比较since和for
since 用来说明动作起始时间，for用来说明动作延续时间长度。　　i have lived here for more than twenty years.　　i have lived here since i was born..　　my aunt has worked in a clinic since 1949.　 　　some new oilfields have been opened up since 1976. 　　i have known xiao li since she was a little girl.　 　　my brother has been in the youth league for two years.　　　i have not heard from my uncle for a long time.
　　注意：并非有for 作为时间状语的句子都用现在完成时。　　 i worked here for more than twenty years. 　　　(我现在已不在这里工作。)　　 i have worked here for many years.　　　 　　　(现在我仍在这里工作。)
　　小窍门：　当现在完成时+一段时间，这一结构中，我们用下面的公式转化，很容易就能排除非延续动词在完成时中的误使。　　1)　(对) tom has studied russian for three years.　　　 = tom began to study russian three years ago, and is still studying it now.　　2)　(错) harry has got married for six years.　　　 = harry began to get married six years ago, and is still getting married now.　　显然，第二句不对，它应改为 harry got married six years ago.　或 harry has been married for six years.动词的时态：比较since和for 相关内容:查看更多>>英语中时间状语有哪些？还有相应的时态_百度知道
英语中时间状语有哪些？还有相应的时态
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）词态 态谓语词所表示作或情况发间各种形式．英语词16种态见九种:般现、般、般、现进行、进行、现完、完现完进行用态八种 1．般现用 1)表示经性、习惯性作；表示现状态、特征真理．句用 oftenusuallyevery day等间状语例： He goes to school every day．(经性作) He is very happy．(现状态) The earth moves around the sun．(真理) 2)间状语句条件状语句用般现表示．例： If you come this afternoonwe' ll have a meeting． When I graduateI’ll go to the countryside. 3)态表示按计划、规定要发作(句都带间状语)限于少数词 begincomeleavegoarrivestartstopreturnopenclose等．例： The meeting begins at seven. The train starts at nine in the morning． 4)表示状态觉词 belikehatethinkrememberfindsound等用般现．例： I like English very much. The story sounds very interesting. 5)书报标题说等情节介绍用般现． 2．般用 l)表示某间发事、存状态或反复发作． He saw Mr Wang yesterday. He worked in a factory in 1986 2）表示经发作用used towould +词原形例： I used to smoke. During the vacation I would swim in the sea. 注意；used to表示发现再发作或存状态另外to be used to +名词（句词）表示习惯于……例 I am used to the climate here. He is used to swimming in winter． 3.般用 般表示作或状态其表达形式除 will或 shall十词原形外几种形式． l) to be going to十词原形表示即发或近打算进行事．例： It is going to rain. We are going to have a meeting today． 2) gocomestartmovesailleave等用进行态表示按计划即发作．例: I’m leaving for Beijing. 3)be to十词原形表示按计划要发事或征求意见．例： Are we to go on with this work? The boy is to go to school tomorrow． 4) be about to十词原形表示即发作例： We are about to leave． 5)某些词 comegoleavearrivestart等般现现进行表示. The meeting starts at five o’clock. He is leaving tomorrow． 4．现进行用 1)现进行表示现进行作由 to be十现词构另外系词十介词或副词表示进行意义．例： What are you doing? The bridge is under construction． 2)表示觉愿望状态某些词 havebehearseelike等词般用进行． 5．进行用 l)进行表示某刻、某阶段进行作由 was(were)十现词构．例: In 1980 he was studying in a university. He was reading a novel when I came in． 6．现完用 现完由 have十词构．其使用两种情况： 1)现完所表示作说前已完现影响．句没具体间状语．例 He has gone to Fuzhou. (说认该) He has been to Fuzhou．(说认该) 2)现完所表示作始于持续现许持续．用for since表示段间状语或 so farnowtoday, this week( monthyear)等表示包括现问内状语例: He has studied English for 5 years． He has studied English since 1985． Now I have finished the work. 注意：表示短暂间作词 comegodiemarrybuy等完能与forsince等表示段间词连用． 3)现完用间条件状语句、表示某完作．例： I’ll go to your home when I have finished my homework． If it has stopped snowing in the morningwe’ll go to the park. 7．完用 l)完由 had十词构完词表示某刻或某作前完作或状态．句用 bybeforeuntilwhen等词引导间状语．例： By the end of last year we had built five new houses. I had learnt 5000 words before I entered the university. 2)完词表示某刻前发作或状态持续某间或持续例： Before he slepthe had worked for 12 hours． 8．用 表示某间看要发作或存状态．由 should或 would十词原形构第称用 should其称用 would．例： They were sure that they would succeed． 9．现完进行用 现完进行由 have(has)十 been十现词构表示现前直进行作些词 workstudy、liveteach等用现完进行与用现完意思差．例： I have worked here for three years． I have been working here for three years. 数词两种态表示同意思．例： I have written a letter(已写完) I have been writing a letter．(写) 注意：表示短暂作词 finishmarry
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参考资料：
只能说是一般有这些典型的时间状语，不是绝对哦： 1、一般现在时： frequently(频繁地、经常), always, hardly, never, scarcely
(很少), often, occasionally (有时、偶尔), rarely
(很少), seldom (很少), sometimes (有时), usually 2、一般过去时： 体现出“过去”的时间状语，没有什么典型的，一般都很容易看出的，比如：yesterday、 the day befor...
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英语共有十六个时态、四个体。（注：四个体为——一般、进行、完成、完成进行。）
　　英语中的四个体相当于法语、西班牙语以及所有印欧语系罗曼语族中的式，如：直陈式，命令式等。
（1）一般现在时
　　基本形式（以do为例）：
　　第三人称单数：does（主语为非第三人称单数）；
　　肯定句：主语＋动词原形＋其他；
　　He works for us.
　　否定句：主语＋don‘t/doesn't＋动词原形＋其他；
　　He doesn't work for us.
　　一般疑问句：Do/Does＋主语＋动词原形＋其他。
　　肯定回答：Yes，（＋ 主语＋do/does）．
　　否定回答：No，（＋主语＋don't/doesn't.）
　　特殊疑问句：疑问词+一般疑问句语
　　Does he work for us?
　　Yes, he does.
　　No, he doesn't
　　What does h...
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