小学四种时态句子结构以及各种时态标志
词
一般现在时的句型结构
一般现在时的标志词：
sometimes, often, usually, always, every day, five days a week, three times a month等.
1. 含有be动词的句子结构的变化：
①肯定句：主语+be(am,is,are)+其他。如：I am a boy. 我是一个男孩。
②否定句：主语+ be + not +其他。 如：He is not a worker.他不是工人。
③一般疑问句：Be +主语+其它？如：-Are you a student? -Yes. I am. / No, I'm not.
④特殊疑问句：疑问词+一般疑问句？如：Where is my bike? 2. 含有行为动词的句子结构的变化：
①肯定句：主语+行为动词(+其它)。如：We study English.我们学习英语。
②否定句：主语+ don't( doesn't ) +动词原形(+其它)。 如：I don't like bread. He doesn't often play.
③一般疑问句：Do( Does ) +主语+动词原形+其他？ 如：- Do you often play football? - Yes, I do. / No, I don't. -
Does she go to work by bike? - Yes, she does. / No, she doesn't. ④特殊疑问句：疑问词+一般疑问句？即：疑问词+ Do( Does ) +主语+动词原形+其他？ 如：How does your father go to work?
一般过去时句型结构
一般过去时标志词：yesterday, last, the daybefore …, ago和过去的某个时间，具体如下：
（1）yesterday,
yesterday morning/afternoon/evening ,
last week, last year, at the end of last term/we等, （2）一段时间+ago
如:ten years ago, five hours ago,
（3）过去的某个时间，
如： on January 1st,2004, in the 1980s等.
1.含有be动词的句子结构的变化：
⑴am 和is在一般过去时中变为was。（was not=wasn’t） ⑵are在一般过去时中变为were。（were not=weren’t） ⑶带有was或were的句子，其否定、疑问的变化和is, am, are一样，即否定句在was或were后加not，一般疑问句把was或were调到句首，特殊疑问句的结构为：疑问词+一般疑问句。2.含有行为动词的句子结构的变化： 肯定句：主语+动词过去式+其他。如：Jim went home yesterday.
否定句：主语+didn’t +动词原形。如：
Jim didn’t go home yesterday. 一般疑问句：Did+主语+动原+其他？如：Did Jim go home yesterday?
特殊疑问句：⑴疑问词+did+主语+动词原形+其他？如：
What did Jim do yesterday?
⑵疑问词当主语时：疑问词+动词过去式+其他？ 如：Who went to home yesterday?
一般将来时句型结构
一般将来时标志词：tomorrow,
next, soon, in a few days, in the future，from now on,或者未来的某个时间，如in the year 2500等。
1. 用be going to 表达
① 肯定句：主语+be (am/is/are) + going to + 动词原形+其他
如：We are going to have a football match in six days. 我们六天后将要进行足球比赛。
② 否定句：主语+be (am/is/are) + not + going to + 动词原形+其他 如：We aren't going to have a football match in six days. 我们六天后将不进行足球比赛。
③ 一般疑问句：Be (am/is/are) +主语+going to + 动词原形+其他? 如：Are you going to have a football match in six days? 你们六天后将进行足球比赛吗？
④特殊疑问句：疑问词+一般疑问句？即：疑问词+ am/ is/ are + 主语+going to + 动词 原形+其他? 如：
When are we going to have a football match？
2.用will/shall表达
①肯定句：主语+will / shall (常用于第一人称)+ 动词原形+其他 如：She will go to Beihai Park tomorrow. 她明天将要去北海公园。 ②否定句：主语+will / shall (常用于第一人称)+ not + 动词原形+其他 如：She won't go to Beihai Park tomorrow. 她明天不去北海公园。
③ 一般疑问句： Will / shall (常用于第一人称) +主语 + 动词原形+其他?
Will she go to Beihai Park tomorrow? 她明天将要去北海公园吗？
④特殊疑问句：疑问词+一般疑问句？
即：疑问词+ Will / shall (常用于第一人称) +主语 + 动词原形+其他?
如：What will she do tomorrow？
现在进行时句型结构
现在进行时标志词：now, at the moment, look, listen等。
1）肯定句：主语+am/ is/ are + V-ing + 其他。如：Nancy is reading a book now. 南茜正在读书。
The twins are playing in their bedroom. 那对双胞胎正在卧室里玩。
2）否定句：主语+am/ is/ are +V-ing + not + 其他。如： Nancy isn’t reading a book now. 南茜没有正在读书。
The twins aren’t playing in their bedroom. 那对双胞胎没有正在卧室里玩 。
3)一般疑问句：Am/ Is/ Are+ 主语+ V-ing + 其他？如：Is Nancy reading a book now? 南茜正在读书吗？
Are the twins playing in their bedroom? 那对双胞胎正在卧室里玩吗？
4)特殊疑问句：疑问词+一般疑问句？即：疑问词+ am/ is/ are + 主语+ V-ing + 其他？ 如：
What are they doing now？ Where is he playing？
