[整理版]三种时态的变化规则

a. 表示现在( 指说话人说话时) 正在发生的事情或当前一段时间内的活动或现阶段正在进行的动作。 We are waiting for you.

I’m doing my homework now. They are watching TV. b. 习惯进行：表示长期的或重复性的动作，说话时动作未必正在进行。

Mr. Green is writing another novel(小说). (说话时并未在写，只处于写作的状态。) 3、动词-ing的变形规则 1）一般情况直接加-ing。

Play—playing look—looking go—going 2）以不发音的e结尾，去e加ing。

Write—writing take—taking close—closing 3）重读闭音节，双写末尾的字母，再加ing。 Swim—swimming put—putting run—running 练习一（写出下列单词的-ing形式）

1 begin 2 come 3 eat 4 know 5 show 6 sit 7 speak 8 go 9 see 10 do 11 have 12 wear 13 ride 14 feel 15 study 16 sing

练习二（用所给单词的适当形式填空）

1.Look!The grandma ________(run)after the grandson. 2.Listen!The students _______(sing)an English song. 3.Don

t go out.It___________(rain)hard now. 4.Tom _______(read) a book now.

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5.The children _________(not listen) to the music now. 6.Are they _______(have) breakfast now? 7.Is your father _________(fish) now?

二．一般现在时的构成：be(is,are,am,are) have(has)

除第三人称单数由动词原形加词尾-s或-es构成外，其他一律用动词原形 一般现在时的标志：

every day,usually,often,always,sometimes,never. 一般现在时的用法

1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。2) 客观真理，客观存在，科学事实。3) 表示格言或警句中。4) 现在时刻的状态、能力、性格、个性。 动词的第三人称单数变化

1、一般情况在词尾加-s 2、以字母s,x,ch,sh,o 结尾加-es 3、以辅音字母加y结尾的动词，先变y为i再加es

练习一（写出下列单词的第三人称单数）

1 help 11 fix 2 make 12 teach 3 swim 13 wash 4 leave 14 close 5 know 15 go 6 play 16 fly 7 get 17 carry 8 ride 18 study 9

boy 19 be 10 guess 20 have 练习二（用所给单词的适当形式填空） 1.We ______ (be) in the same city—Shenzhen.

2.There______(be)a ruler and four pencils in the box. 3.There______(be)four pencils and a ruler in the box. 4.She_______(have) black hair.

5.He _______(go) to school by bike every day. 6.Sandy usually______(get)up early in the morning. 7.My brother,Ken,________(watch)TV sometimes. 8.His father often_______(walk)after supper. 9.Does Peter_______(love)the new school?

10.Does the man_________(work) hard every day? 11.Do their parents usually ________(visit)China? 12.My aunt ________(not like) music in her spare time. 13.The students___________(not plant)trees every year. 三．一般过去时：

1.表示在确定的过去时间里所发生的动作或存在的状态。 2.表示在过去一段时间内，经常性或习惯性的动作。

3.一般过去时的标志：yesterday,yesteday evening,two weeks ago,last week,in 1995等。

4.动词过去式的变化 （1）规则变化 1）一般情况直接+ed 如：work-worked play-played 2）以e结尾的词只加-d 如：live-lived dance-danced

3）以“辅音字母+y”结尾的词，变y为i再加-ed 如：study-studied 4) 以重读闭音节结尾，且末尾只有一个辅音字母的词，先将这 个字母双写，再加-ed. 如：stop-stopped plan-planned

（2）不

规

则变

化 be Was/were keep kept set set begin began know knew sing sang bring brought leave left sit sat come came let let sleep slept can could make made speak spoke do did may might stand stood fly flew meet met sweep swept get got pay paid take took give gave put put teach taught go went read read tell told have

had say

said write wrote hear heard see saw

1.It __________(be)very hot last year. 2.We __________(be )in the North in 1987.

3.She _________(go)to class late yesterday morning.

4.Last night I ______(do) my homework and________(have)a bath. 5.---How did you like the book?---I __________(like) it very much. 6. When______ you________(have)breakfast yesterday? 7.I ___________(not see)you yesterday. 8.There_____(be)three bottles of orange on the desk a moment ago. 9.Yesterday my cousin__________(write) a letter to me.

10.Where (do) you go just now?