初一英语语法之一般现在时
一般现在时:
功能 1.表示事物或人物的特征、状态。如:The sky is blue.天空是蓝色的。
2.表示经常性或习惯性的动作。如:I get up at six every day.我每天六点起床。
3.表示客观现实。如:The earth goes around the sun.地球绕着太阳转。
一般现在时的构成
1. be动词:主语+be(am,is,are)+其它。如:I am a boy.我是一个男孩。
2.行为动词:主语+行为动词(+其它)。如:We study English.我们学习英语。
当主语为第三人称单数(he, she,it)时,要在动词后加"-s"或"-es"。
如:Mary likes Chinese.玛丽喜欢汉语。
一般现在时的变化
1. be动词的变化。
否定句:主语+ be + not +其它(be动词后+not)如:He is not a worker.他不是工人。
一般疑问句:Be +主语+其它。(be动词放句首)如:-Are you a student? -Yes. I am. / No, I'm not.
特殊疑问句:疑问词+一般疑问句。如:Where is my bike?
(疑问词) (一般疑问句)
2.行为动词的变化。
否定句:主语+ don't( doesn't ) +动词原形(+其它)。如:I don't like bread.
当主语为第三人称单数时,要用doesn't构成否定句。如:He doesn't often play.
一般疑问句:Do( Does ) +主语+动词原形+其它。如:- Do you often play football?
- Yes, I do. / No, I don't. 当主语为第三人称单数时,要用does构成一般疑问句。如:- Does she go to work by bike?
- Yes, she does. / No, she doesn't.
特殊疑问句:疑问词+一般疑问句。如:How does your father go to work?
动词+s的变化规则
1.一般情况下,直接加-s,如:cook-cooks, milk-milks
2.以s. x. sh. ch. o结尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes
3.以“辅音字母+y”结尾,变y为i, 再加-es,如:study-studies
初一英语语法之过去时
一般过去时
1.一般过去时表示过去某个时间发生的动作或存在的状态,常和表示过去的时间状语连用。一般过去时也表示过去经常或反复发生的动作感谢。
2.Be动词在一般过去时中的变化:
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。
3.句中没有be动词的一般过去时的句子,要借助动词did
否定句:didn’t +动词原形,如:Jim didn’t go home yesterday.
一般疑问句:在句首加did,句子中的动词过去式变原形。如:Did Jim go home yesterday?
特殊疑问句:⑴疑问词+did+主语+动词原形?
如: What did Jim do yesterday?
⑵疑问词当主语时:疑问词+动词过去式?
如: Who went to home yesterday?
动词过去式变化规则:
1.一般在动词末尾加-ed,如:pull-pulled, cook-cooked
2.结尾是e加d,如:taste-tasted
3.末尾只有一个元音字母和一个辅音字母的重读闭音节,应双写末尾的辅音字母,再加-ed,如:stop-stopped
4.以“辅音字母+y”结尾的,变y为i, 再加-ed,如:study-studied
5.不规则动词过去式:
am,is-was, are-were, do-did, see-saw, say-said, give-gave, get-got, go-went, come-came, have-had, eat-ate, take-took, run-ran, sing-sang, put-put, make-made, read-read, write-wrote, draw-drew, drink-drank, fly-flew, ride-rode, speak-spoke, sweep-swept, swim-swam, sit-sat
初一英语语法之现在进行时
现在进行时
1.现在进行时表示现在正在进行或发生的动作,也可表示当前一段时间内的活动或现阶段正在进行的动作。
2.现在进行时的肯定句基本结构为be+动词ing. 否定句在be后加not。
4.现在进行时的一般疑问句把be动词调到句首。
5.现在进行时的特殊疑问的基本结构为:疑问词 + be + 主语 + 动词ing?
动词加ing的变化规则
1.一般情况下,直接加ing,如:cook-cooking
2.以不发音的e结尾,去e加ing,如:make-making, taste-tasting
3.如果末尾是一个元音字母和一个辅音字母,双写末尾的辅音字母,再加ing,如:run-running, stop-stopping
现在进行时专项练习:
一、写出下列动词的现在分词(ing形式):
play______ run_______ swim_________ make________ go________ like________ write________ ski___________ read________ have_________ sing ________ dance_________put_________ see________buy_________love________live_______take______come________ get________
stop_________ sit ________ begin________ shop___________
二、用所给的动词的正确形式填空,并划出句中的时间状语:
1.The boy __________________ ( draw)a picture now.
2. Listen .Some girls _______________ ( sing)in the classroom .
3. My mother _________________ ( cook )some nice food now.
4. What _____ you ______ ( do ) now?
5. Look . They _______________( have) an English lesson .
6.They ____________(not ,water) the flowers now.
7.Look! the girls ________________(dance )in the classroom .
8.What is our granddaughter doing? She _________(listen ) to music.
9. It’s 5 o’clock now. We _____________(have)supper now
10.______Helen____________(wash )clothes? Yes ,she is .
三、句型转换:
1. They are doing housework .(分别改成一般疑问句和否定句)
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2.The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)
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3.I’m playing the football in the playground .(对划线部分进行提问)
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4.Tom is reading books in his study . (对划线部分进行提问)
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