英语中的时态概述
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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。
时态详解
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‘ts/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 he do for us? He works for us.
一般过去时
be动词+行为动词的过去式 否定句式：在行为动词前加didn’t，同时还原行为动词，或was/were+not; was或were放于句首;用助动词do的过去式did提问，同时还原行为动词; 例如： Did he work for us? He didn't work for us. He worked for us.
一般将来时
am/are/is+going to+do 或 will/shall+do am/is/are/about to + do am/is/are to + do; 一般将来时的表达方法 be going to +动词原形 be +不定式,be to+动词原形,be about to +动词原形 be able to +不定式 be about to+动词原形 will + 动词原形; 例如：He is going to work for us. He will work for us; He is coming.这是特殊的用一般现在时 表达 将来时态 的例子!!
过去将来时
be(was，were)going to+动词原形 be(was，were)about to+动词原形 be(was，were)to+动词原形 肯定句：主语+be(was，were)going to+动词原形～. 否定句：主语+be(was，were)not going to+动词原形～.
疑问句：Be(Was，Were)+主语+going to+动词原形～? 肯定句：主语+would(should)+动词原形～. 否定句：主语+would(should)not+动词原形～. 疑问句：Would(Should)+主语+动词原形～? He would work for us.
现在进行时
主语+be+v.ing〔现在分词〕形式(其中v表示动词) 表示现在正在进行的动作或最近在做的事。 例如：I am buying a book.
第一人称+am+doing+sth
第二人称+are+doing +sth (doing是泛指所有的v-ing形式)
第三人称+is+doing+sth 例：He is working.
过去进行时
肯定句：主语+was/were+doing+其它 否定句：主语+was/were+not+doing+其它 一般疑问句及答语：Was/Were+主语+doing+其它 ;答语：Yes,I主语+was/were./No,I主语+wasn't/weren't. 特殊疑问句：特殊疑问词+was/were+主语+doing+其它 He was working when he was alive.
将来进行时
主语+will + be +现在分词 He will be working for us.=He will work for us.
过去将来进行时
should(would)+be+现在分词 He said that he would be working for us.=He said that he would work for us.
现在完成时
基本结构：主语+have/has+过去分词(done) ①肯定句：主语+have/has+过去分词+其他 ②否定句：主语+have/has+not+过去分词+其他 ③一般疑问句：Have/Has+主语+过去分词+其他 肯定回答：Yes+主语+have/has 否定回答：No+主语+have/has ④特殊疑问句：特殊疑问词+一般疑问句(have/has+主语+过去分词+其他\ He has worked for us for ten years. Has he worked for us for ten years?
