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1、一、一般现在时【知识梳理】1）一般现在时表示经常发生或习惯性的动作或状态及客观现实和普遍真理。一般现在时常以动词原形表示，但当主语是第三人称单数时，动词词尾加-s或-es。2）句型结构：主语.（包括be动词）宾语 She is an engineer. He has breakfast at 6:00every day.3）注意： a)一般现在时通常与always , often , usually , every day , sometimes , once a week 等时间状语连用。 I always watch TV at 8:00 in the evening. They go h
2、ome once a week. We usually do our homework at home. b)表客观现实或普遍真理。 The sun always rises in the east. The light travels faster than the sound. c)表永远性的动作或状态。 He lives in the country.4）第三人称单数变化形式。 a)一般情况动词在词尾加-s . come-comes speak-speaks work-works live-lives b)以o, s, x, ch, sh结尾的单词在词后加-es. do-does go-
3、goes finish-finishes brush-brushes fix-fixes pass-passes watch-watches c)以“辅音字母y”结尾的单词变y为i加-es. Study-studies carry-carries cry-cries d)以“元音字母y”结尾的单词直接加-s. Play-plays stay-stays5）否定句和疑问句。Eg：a)-He is an engineer. -He isnt an engineer. -Is he an engineer? -Yes, he is. / No, he isnt. b) -We get up at 7
4、:30 in the morning. -We dont get up at 7:30 in the morning . -Do you get up at 7:30 in the morning? -Yes, we do. / No, we dont. c) -He likes music. -He doesnt like music. -Does he like music? -Yes ,he does./ No, he doesnt 2、 一般过去时【知识梳理】1）一般过去时表示发生在过去的动作或存在的状态，通常与表示过去的时间状语yesterday, last night ,some
5、years ago, in 1990,in those days.等连用。Eg: I was a student 6 years ago. I went to Beijing last year.They saw a film last night.2）句型结构：主语.过去时宾语3）否定句和疑问句。a) -He was busy yesterday. -He wasnt busy. -Was he busy? -Yes, he was. / No, he wasnt.b) -He smoked last year. -He didnt smoke last year. -Did he smok
6、e last year? -Yes, he did. /No, he didnt.c) -He joined the army in 1990. -He didnt join the army in 1990. -Did he join the army in 1990? -Yes, he did. /No, he didnt.4）动词过去式变化规则。 a)一般情况下的词加-ed. work-worked call-called laugh-laughed Explain-explained finish-finished knock-knocked b)以不发音的字母e结尾的单词直接加-d
7、. live-lived change-changed smoke-smoked die-died graduate-graduated drive-drove c)以“辅音字母y”结尾的单词，变y为i加-ed. study-studied carry-carried cry-cried try-tried marry-married d)以“元音字母y”结尾的单词直接加-ed. play-played stay-stayed e)以“一个元音字母一个辅音字母”结尾的单词应先双写这个辅音字母然后再加-ed. stop-stopped plan-planned pat-patted f)动词不规
8、则变化： do-did go-went come-came run-ran write-wrote begin-began drink-drank keep-kept leave-left sleep-slept make-made lie-lay dig-dug eat-ate know-knew cut-cut set-set let-let read-read hurt-hurt三、一般将来时【知识梳理】1)表示将来发生的动作或存在的状态，常与表将来的时间状语tomorrow, the day after tomorrow, next Sunday, soon, in a few day
9、s等连用。2)句型结构：主语will/shallV.原形（第一人称用shall） I shall go to Shanghai tomorrow. They will have a meeting next week. -She will be 20 years old. -Will she be 20 years old? -Yes, she will. / No, she wont .3)主语will/shallV.原形 Be (am, is, are) going to They will have a meeting next Sunday. (will=are going to )
10、-What will they do next Sunday? -When will they have a meeting?4) be about toV.原形 I am about to leave school.不能与表示时间的副词连用。They are about to set out.()They are about to set out soon.() 四、现在进行时【知识梳理】1)现在进行时表示现在或现在这段时间正在进行的动作。通常与now, at present 等时间状语连用。2)基本结构：主语+be(am, is, are)+ v-ing + You are listeni
11、ng to me carefully now. She is writing a letter this year. Look! They are dancing. We are studying English at present. Its raining hard now.3）动词现在分词的构成一般动词直接在词后加-ingdo doing read reading work working think thinking study studying go going watch watching jump - jumping 以不发音的字母e 结尾的动词，应先去掉 e 然后加 ingli
12、ke liking take taking leave leaving live living receive receiving dance dancingcome coming smoke smoking write - writing以“一个元音字母 + 一个辅音字母”结尾的动词，应先双写这个辅音字母然后再加-ingstop stopping begin beginning dig digging swim swimming run running sit sitting(注意：listen listening open opening eat eating rain raining sleep - sleeping)以ie结尾的动词，把ie改为y ，再加ing die-dying lie-lying