初中八种时态精讲
（一）一般现在时的语法讲解:
1). 当谓语动词是be动词时，根据主语的人称和数，分别用am,is,are.
肯定句：主+be动词+其它. e.g. I am in Nanyang.
否定句：主+be动词+not+其它. e.g. He is not a teacher.
一般疑问句：-Be动词+主语+其它？ e.g. -Is he a teacher?
-Yes, 主+be. / No, 主+be not. -Yes, he is. /No, he isn't.
特殊疑问句：特殊疑问词+be动词+主语+其它？
e.g. Where is he from? What is your name?
2).当谓语动词是实义动词时，分以下两种情况：
A. 当主语不是单三时(I, you, they, we, A and B, 复数)：
肯定句：主语+实义动词原形+其它. e.g. You like English.
否定句：主语+don't+实义动词原形+其它. e.g. You don't like English.
一般疑问句：-Do +主语+动原形+其它？e.g. -Do you like English?
-Yes, 主语+do. /No,主语+don't. -Yes, I do./No, I don't.
特殊疑问句：特殊疑问词+do+主语+动原形+其它？
e.g. Where do you live? What do they want to do?
B．当主语是单三时（he, she, it,某一个人，单数）：
肯定句：主语+实义动词单三形式+其它. e.g. He likes English.
否定句：主语+doesn't+动词原形+其它. e.g. He doesn't like English.
一般疑问句：-Does +主语+动原+其它
-Yes, 主语+does. /No,主语+doesn't.
e.g. -Does he like English? -Yes, he does./No, he doesn't.
特殊疑问句：特殊疑问词+does+主语+动原形+其它？
e.g. Where does he live? What does she want to do?
(3)常见的时间状语always, usually, often, sometimes,never,seldom( 频度副词）
every week (day, year, month…), once a week, twice，on Sundays
( 二）一般过去式
1、概念：表示过去发生的动作、事件、情况，而现在已结束，也可以表示过去时间里经常性
或习惯性的动作，或主语过去的性格和能力。
2、常见的时间状语
①yesterday ,yesterday morning/afternoon/evening
②just now刚才in the past过去the day before yesterday前天
③ago短语：a moment ago, an hour ago, three weeks ago, two months ago, 等
④in+时间点：in 2000，in 1995，in 1880
⑤last短语：last week上周/last year去年/last month上个月/last night昨天晚上
（三）现在进行式
1、概念：表示说话时或现阶段正在进行的动作或存在的状态。
2、谓语动词的结构：be（is, am, are）+ doing (动词的现在分词)
（be动词要与主语的人称和数保持一致）
3、常见的时间状语：now, at the moment, at this time, 还有常见的标志词look, listen
如：Look! She is singing! Listen! She is listening to the music.
4、现在进行时的句式
①肯定句：主语+be动词+现在分词+其他My sister is watching TV now.
②否定句：主语+be动词+not+现在分词+其他My sister isn’t watching TV now.
③一般疑问句：Be +主语+doing+其他？Yes，主语+be/No，主语+be+not
Are you watching TV now? Yes, I am. / No, I’m not.
Is she reading books? Yes, she is. / No, she isn’t.
④特殊疑问句：特殊疑问词+be+主语+Ving+其他？
常用现在进行时的肯定陈述句回答。
What are you doing now? What is he/she doing now?
What is KangKang doing now? What are they doing now?
What are Wangli and Limei doing now?
4、特殊的现在分词有（双写最后一个字母）
plan, get, shop, run, begin, put, swim, stop , sit
(口诀：他计划在商店里买了东西后放入游泳池中开始跑，然后停下来坐下。) 5动词go , come ,leave, fly等可以使用现在进行时，表示按计划将要进行的动作：
I’m coming. 我将来了。Are you going to Nanyang tomorrow?明天你将去南阳吗？( 四）语法精讲：过去进行时
1概念：表示过去某个时刻或某一段时间正在进行的动作，常和表示过去的时间状语连用。
2时间状语：（1）at 8 o’clock yesterday evening at 12 o’clock
(2)from…..to….+yesterday短语（等过去式时间状语）
He was watching Tv from 7 to 9 last night.
(3)at that time 在那时at this time yesterday , all day全天
（4）yesterday morning/afternoon/evening. The day before yesterday. Last year/month/week/night
这类时间状语既可以用于一般过去式，也可以用于过去进行时，要根据上下文情景判定谓语动词的时态，He was reading a novels last night(昨晚他一直在读)
He read a novel last night,(昨晚他看了一本小说)
用过去进行时强调动作进行的全过程，用一般过去式单纯说明动作完成的事实
