一般现在时语法讲解.docx
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一般现在时语法讲解
一、定义与讲解
一般现在时:
表示经常性的事情,经常性的动作或一般性事实。
时间状语:
often经常,usually通常,always总是,every(day,week,month,year),sometimes有时,onweekends,at+在几点钟
只有在第三人称单数用动词的“三单变化”,其他用动词的原形。
三单变化:
1.多数在动词后+s:
play—playslike—likes
(1)直接在动词词尾加-s.
ask---askswork---worksget---getsstay---stays
(2)以字母s,x,ch,sh或o结尾的动词,在词尾直接加-es.
watch---watcheswish---wishesfix---fixesdo---does
go---goespass---passes
(3)以“辅音字母加-y”结尾的动词,要先变y为i再加-es.
try---triesstudy---studiescry---criesfly---flies
情况
构成方法
读音
例词
一般情况
加-s
清辅音后读/s/浊辅音和元音后读/z/
swim-swims;help-helps;like-likes
以辅音字母+o结尾的词
加-es
读/z/
goes,does
以s,sh,ch,x等结尾的词
加-es
读/iz/
watches,washes
以辅音字母+y结尾的词
变y为i再加es
读/z/
study-studies
不规则变化have和be动词
变have为has变be为am,is,are
have-hasbe-am,is,are
2.不规则变化:
be----am,is,arehave----has
二、一般现在时的用法
表示经常性或习惯性的动作或存在的状态;表示客观事实或普遍真理;在时间、条件等状语从句中,用现在时表示将来;在某些以here,there开头的句子中,用一般现在时表示正在发生的动作
1)经常性或习惯性的动作,常与表示频度的时间状语连用。
时间状语:
every…,sometimes, at…,onSundayIleavehomeforschoolat7everymorning.
2)客观真理,客观存在,科学事实。
Theearthmovesaroundthesun.ShanghailiesintheeastofChina.
3)表示格言或警句中。
Pridegoesbeforeafall. 骄者必败。
当主语是第三人称单数时:
1、动词变相应的第三人称单数形式
2、肯定句主语+动词s+其它
3、否定句主语+doesn't+动词原形+其它
4、一般疑问句Does+主语+动词原形+其它
5、肯定回答Yes,主语+does
6、否定回答No,主语+doesn't
7、特殊疑问句特殊疑问词+一般疑问句
当主语不是第三人称单数时:
1、肯定句主语+动词原形+其它
2、否定句主语+don't+动词原形+其它
3、一般疑问句Do+主语+动词原形+其它
4、要注意,句式结构错则全都错。
5、谓语动词的形式:
do/does
三、一般现在时的结构
一般现在时的结构
肯定式
疑问式
否定式
否定疑问式
Iwork.
Doyouwork?
Idon'twork.
Don'tyouwork?
Youwork.
Doyouwork?
Youdon'twork.
Don'tyouwork?
Wework.
Doyouwork?
Wedon'twork.
Don'tyouwork?
Theywork.
Dotheywork?
Theydon'twork.
Don'ttheywork?
He(She,It)works.
Doeshe(she,it)work?
He(She,It)doesn'twork.
Doesn'the(sheit)work?
练习:
1)用动词的适当形式填空 1.Ilike____________(swim). 2.He_________(read)Englisheveryday. 3.We_________(go)toschoolatseveninthemorning. 4.Mike________(go)toschoolatseveninthemorning. 5.Mymother________(like)______(go)shopping. 6.Ican________(draw)manybeautifulpictures. 7.She_________(make)amodelplane. 8.Doyou________(like)_________(run)?
9.Doeshe_________(like)_________(jump)?
10.DoesNancy_________(grow)flowersonSaturday?
11.Theteachers________(like)___________(dance). 12.Theteacher________(like)____________(dance). 13.Thestudents___________(speak)Englishinclass. 14.Thestudent_________(speak)Chineseafterclass. 15.Let's____________andplayfootball.(go) 16.He_____________likeswimming.(not) 17.I'msorry____________that.(hear) 18.He_______________makingsoup.(begoodat)
19.He______________makingsoup.(dowellin) 20._______youstudyEnglishatschool?
Yes,I_________.(do) 21.__________yoursisterstudyEnglishatschool?
No,she_______.(do) 22.How______Scottfeeltoday?
.(do) 23.Why__________Tomabsenttoday?
(be) 2)用所给的人称改写句子1.ItakephotosonSunday.(Mike)
2.Wegrow(种植)beautifulflowers.(she)
3.Theylikecollectingstamps(集邮).(Ben)
4.Ilistentomusiccarefully.(myaunt)
5.Youlikemakingamodelship(轮船模型).(Helen)
6.Wecleantheclassroomeveryday.(he)
7.Theylookafter(照顾)thepandas.(MrWang)
8.Idrawatreeandsomeflowers.(Nancy)
9.Wegotobedateight.(mysister)
10.Ireadnewspapersintheevening.(MrGreen)
Eg
:
肯定句
He is watching TV now.
Eg
:
肯定句
We are working.
否定句
He is not watching TV now.
否定句
We are not working.
一般疑问句
Is he watching TV now?
一般疑问句
Are you working
?
肯定回答
Yes, he is.
肯定回答
Yes
,
we are.
否定回答
No, he isn’t.
否定回答
No
,
we aren’t .
Eg
:
肯定句
Tom and Mike are playing football right now.
否定句
Tom and Mike aren’t playing footb
all right now.
一般疑问句
Are Tom and Mike playing football right now
?
肯定回答
Yes
,
they are.
否定回答
No
,
they aren’t .
课堂练习:
(
1
)
. They are singing in the classroom.
否定句:
____________________________
一般疑问句:
_________________________
肯定回答:
____________________
否定回答:
____________________
(
2
)
.
用括号中动词的适当形式填空
1. My parents
____
_________
(
watch
)
TV now.
2. Look. Three boys
______
_________
(
run
)
.
3. ___ your dog
______ now?
(
sleep
)
4. ____ you
_____
(
listen
)
to music?
Yes, I am.
(
3
)选择题
1
. It’s
eight o’clock.