内容正文:
一般现在时
表示经常性、习惯性、规律性、真理性的动作或状态,或者动作有时间规律发生的事件的一种事件状态。
经常性、习惯性、规律性:表示“经常发生的动作”,比如每天起床、吃饭、睡觉,一个星期打几次游戏或者逛街。I get up at 7:00 every day. 我每天7点起床。这就是一个经常发生的动作,多到“每天”如此。 I like swimming. 我喜欢游泳。 “喜欢”这个词就暗含了惯性在里面。 真理性:表示客观事实或者自然真理,这种情况只能用一般现在时。如 The earth goes around sun. 地球围绕太阳转。 这个是自然真理,无法改变,用一般现在时。
动作或者状态:状态一般用be 动词来表示。
比如 the book is on the desk.(书在桌子上)这句话描述出书就在桌子上的一个状态。 动作用“行为动词”来表示,如run, play, ask等描述动作的词。还要注意像“think, like, believe"这些看”不见动作“或者说在”脑子里呈现动作“的词,也是动词。 he play football.
基本结构
动词原形(如主语为第三人称单数,动词上要改为第三人称单数形式)
We always have seven classes every day.
我们每天上七节课。
It seldom snows here.
这很少下雪
He is always ready to help others.
他随时准备帮助其他人。
Action speaks louder than words.
行动胜于空谈。
否定形式:am/is/ are+ not;此时态的谓语动词若为行为动词,则在其前加dont,如主语为第三人称单数,则用doesn’t, 同时还原行为动词
He is always ready to help others.
变成否定句:He isn’t always ready to help others.
We always have seven classes every day.
变成否定句:We don’t always have seven classes every day.
He usually visits his grandparents>变成否定句:
He doesn’t usually visit his grandparents>
一般疑问句:把be动词放于句首;用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词。
We always have seven classes every day.
变成一般疑问句:
Do you always have seven classes every day?
Action speaks louder than words.
变成一般疑问句:
Does action speak louder than words?
He is good at expressing himself.
变成一般疑问句:
Is he good at expressing himself?
三、一般现在时的用法
1、习惯
一般现在时表示经常性动作或状态时,常与often, always, usually, sometimes, every day等时间状语连用。
The shop opens at nine every day.
这家商店每天九点开门。
It seldom snows here.
这儿很少下雪。
2、真理
一般现在时表示客观存在或普遍真理
Light travels faster than sound.
光速比声速快。
Food easily goes bad in hot weather.
天气热时食物容易坏
The moon goes round the earth.
月亮绕着地球转。
3、性质
一般现在时表示主语的特征或状态
The picture looks very beautiful.
这幅画看起来很美。
Air contains oxygen and nitrogen.
空气含有氧和氮。
She speaks English, French and Chinese.
她说英语,法语和中文。
4、 将来
一般现在时在时间和条件状语从句中表示将来的动作或状态
Ill tell her about it as soon as I see her.
我一见到她就告诉她这件事。
When does the train arrive?
火车几点到?
I will go with you to the hospital when I have time tomorrow.
明天有空的话我就跟你去医院。
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