一般现在时
一．一般现在时描述现在或经常性的动作性质或状态的时态
1.He has a strong accent of an America(现在的状态) 2.Light travels much faster than sound.(客观事实) 3.They go to church every Sunday.(习惯性，经常性) 4.The train arrives at 10:30pm.There is plenty of time.（按时间表，计划，规定将要发生）5.在时间状语从句和条件状语从句中代替一般将来时。If you arrive,please give me a phone call.5.表示正在存在的状态。 There goes the bell.
How hard it rains 一般现在时和现在进行时是初一阶段所学的两种重要时态，它们的不同之处有以下几点：1)基本用不同；2)谓语动词的形式不同；3)时间状语不同；4)有不同的特殊用法。
一、基本用法不同
【1】一般现在时用来表示习惯性的动作或状态。如：She goes to school by bike every day.她每天骑自行车去上学。
【2】现在进行时用来表示现在(说话的瞬间)正在发生或进行的动作或者用来表示现阶段正在进行或存在的状态。如：Look ! She is reading under the tree.瞧！她正在树下看书。
二、谓语动词的形式不同
【1】一般现在时的谓语动词：1) be动词用am/is/are这三种形式；2)实义动词用动词原形或第三人称单数形式(根据主语数的变化而变化)。
【2】现在进行时谓语动词的形式为： am / is / are+动词-ing 形式。如： We go to school at seven in the morning.我们早晨七点钟上学。 I am reading English now.我现在正在读英语。
三、时间状语不同
【1】一般现在时常与often, sometimes, always, usually等频率副词及once a week/day等频率短语连用，还与 every morning /day / week..., on Wednesday, in the morning / afternoon / evening等时间状语连用。
【2】现在进行时常与now, these days, these weeks等时间状语连用。句首有 Look ! / Listen !等提示语时，后面的句子中动词一般用现在进行时。
四、特殊用法
1.一般现在时的特殊用法： 表示客观真理、自然现象往往要用一般现在时表示。如：The moon goes round the earth.月亮绕着地球转。 2.现在进行时的特殊用法： 现在进行时与always 连用时，往往含有赞扬、厌恶、责备等感情色彩。如： He is always working hard.他总是非常努力地工作。(表示赞扬)
come, go, begin, start, leave 等动词常用现在进行时表示将要发生的动作。如：I\'m coming.我就来。
一、选择题练习
1.Who _____ over there now?
A.singing
B.are sing
C.is singing
D.sing 2.It’s eight o’clock.The students _____ an English cla.
A.have
B.having
C.is having D.are having 3.Listen! The baby _____ in the next room.
A.crying
B.cried
C.is crying
D.cries 4.Look! The twins _____ new sweaters.
A.are wearing
B.wearing
C.are wear
D.is wearing 5.Don’t talk here.Grandparents _____. A.is sleeping
B.are sleeping
C.sleeping
D.sleep
6.Tom is a worker.He _____ in a factory.His sisters _____ in a hospital.
A.work/ work
B.works/ work
C.work/ works D works/works 7.Who _____ English best in your cla?
A.speak
B.speaks
C.speaking 8.Mrs Read _____ the windows every day.
A.is cleaning
B.clean
C.cleans 9.We _____ music and often _____ to music.
A.like/ listen
B.likes/ listens
C.like/ are listening
10.She _____ up at six in the morning.
A.get
B.gets
C.getting
11.On Sunday he sometimes _____ his clothes and sometimes _____ some shopping.
A.wash/ do
B.is washing/ is doing
C.washes/ does
12.The twins usually _____ milk and bread for breakfast, but Jim _____ some coffee for it.
A.have/ have
B.have/ has
C.has/ have
二、填空：
1.My father always __________(come) back from work very late.
2.The teacher is busy.He __________ (sleep) six hours a day.
3.Listen! Joan __________(sing) in the claroom.She often __________ (sing) there.
4.__________ your brother __________(know) Japanese?
5.Where __________ you __________ (have) lunch every day?
6.The girl __________(like) wearing a skirt.Look! She __________(wear) a red skirt today.
三、写出下列动词的现在分词形式
1.work___________
sing__________
play__________
study__________
2.dance__________
have__________
write__________
take__________
3.run__________
sit__________
shop__________
swim__________
4.lie__________
