内容正文:
专题十一 动词的时态
知识梳理
考点一:一般现在时
一般现在时
结构
1.主语+be动词(am/is/are)+其他
肯定句:主语+ am/is/are +其他.
否定句:主语+ am/is/are not +其他.
一般疑问句:Am/Is/Are+主语+其他?
2.主语+实义动词原形/第三人称单数+其他
肯定句:主语+动词原形/第三人称单数+其他.
否定句:主语+ don’t/doesn’t +动词原形+其他.
一般疑问句:Do/Does +主语+动词原形+其他?
时间标志词
1.表示频率的副词:always, usually, often, sometimes, seldom, hardly ever, never等
2.on Monday, on Saturday evening, in the morning, every day, every week等短语
3.once a week, twice a month, three times a year等表示频率的短语
用法及例句
1.表示经常发生的动作或存在的状态
I usually get up at six in the morning.
2.表示客观真理、科学事实或名言警句
The earth goes around the sun.
3.“主将从现”原则:用在时间和条件状语从句中,主句用一般将来时,从句用一般现在时
I’ll have a good time if I go to the party.
I will call you as soon as I arrive in London.
4.在某些以here, there开头的句子中,一般现在时表示正在发生的动作
Here comes the bus.
There goes the bell.
动词第三人称单数变化规则
1.一般情况,直接在词尾加
swim - leave -
2.以-s, -x, -sh, -ch, -o结尾的,在词尾加
pass - go -
3.以“辅音字母+ y”结尾的,
study - carry -
4.特殊情况
have -
基础练习
一、按要求改写句子
1. The girl is a student. (改为否定句)
The girl ____________ a student.
2. They are Americans. (改为一般疑问句并作否定回答)
—____________ ____________ Americans?
—____________, ____________ ____________.
3. Jim rides a bike to school every day. (改为一般疑问句并作肯定回答)
—____________ Jim ____________ a bike to school every day?
—____________, ____________ ____________.
4. He’s a bus driver. (对画线部分提问)
____________ ____________ he?
二、用所给词的适当形式填空
1.If it __________ (not rain) tomorrow, we will go to collect waste water for recycling.
2.Everything __________ (be) half price in the supermarket today.
3.Linda always __________ (have) some bread for breakfast.
考点二:一般过去时
一般过去时
结构
1.主语+be动词(was/were)+其他
肯定句:主语+ was/were +其他.
否定句:主语+ was/were not +其他.
一般疑问句:Was/Were+主语+其他?
2.主语+实义动词过去式+其他
肯定句:主语+动词过去式+其他.
否定句:主语+ didn’t +动词原形+其他.
一般疑问句:Did +主语+动词原形+其他?
时间标志词
yesterday, last week, the da