动词时态复习。
第一课时：三种时态专练。
一．现在进行时的构成：be+v+ing. 助动词be的形式要根据主语的人称和数来决定。
1、现在进行时的标志：look!listen!now等词。
2、现在进行时的基本用法：
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(**).
(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）
练习二（用所给单词的适当形式填空）
grandmarun)after the grandson.
students __sing)an english song.
go now.
___read) a book now.
childrennot listen) to the music now.
they __h**e) breakfast now?
your fatherfish) now?
二．一般现在时的构成：be(is,are,am,are) h**e(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）
练习二（用所给单词的适当形式填空）
___be) in the same city—shenzhen.
ruler and four pencils in the box.
pencils and a ruler in the box.
black hair.
___go) to school by bike every day.
usually___get)up early in the morning.
brother,kenwatch)tv sometimes.
father often___walk)after supper.
peter___love)the new school?
the manwork) hard every day?
their parents usuallyvisit)china?
auntnot like) music in her spare time.
studentsnot 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。
练习三。hot last year.
)in the north in 1987.
class late yesterday morning.
night i __do) my homework and___h**e)a bath.
5.--how do you like the book?--ilike) it very much.
6. when___you___h**e)breakfast yesterday?
see)you yesterday.
bottles of orange on the desk a moment ago.
my cousinwrite) a letter to me.
you （go）just now?
i was a child, i often (play) football in the street.
you (do)last weekend?
家作。一， 用所给的动词的适当形式填空。
___be) windy yesterday.
you __for the math test yesterday? (study)
3.--when did you h**e the meeting(会议)? we __h**e) it last week.
black __come) to china with his family in 1990.
___be) you away from school yesterday afternoon?
h**e) any money with me at that time.
and tom __be not) at home just now.
8.--who cleaned the blackboard (黑板) this morning? -lin tao __do).
9.--when __you __go) home on that day? -i __go) home at five.
friendhis homework last monday. (not do)
usually (watch) tv at home.
12. they (speak) english every day?
you ( help) me with (swim)?
had fun ( go) fishing last sunday.
(not h**e) a computer.
likes walking to school but dislikes (go) to school by bus.
(not watch) tv every day.
know you ( arrive )next sunday.
children enjoy (play) soccer after class.
(be) some food in the bag.
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