内容正文:
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
He has a strong accent of an America(现在的状态)
Light travels much faster than sound.(客观事实)
They go to church every Sunday.(习惯性,经常性)
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.
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 class.
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.