【导语】英语语法让很多学生都头疼,因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了小学英语语法大全,希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。
一般现在时
A、当谓语是be动词时,构成为:主语+be动词( am, is, are )+其他。
如:I am a student.
B、当谓语是行为动词时,构成有两种:
(1)主语(非第三人称单数)+动词原形+其他。
如:We often watch TV at the weekends.
(2)主语(第三人称单数)+动词第三人称单数形式+其他。
如:Jim usually goes to the park on Sundays.
C、句型变换:
肯定句、否定句、一般疑问句及回答
They watch TV at six every day.
They dont watch TV at six every day.
Do they watch TV at six every day?
Yes, they do. / No, they dont.
She watches TV at six every day.
She doesnt watch TV at six every day.
Does she watch TV at six every day?
Yes, she does. / No, she doesnt.
一般现在时的用法
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, on Sunday
I leave home for school at 7 every morning.
2) 客观真理,客观存在,科学事实。
The earth moves around the sun.
Shanghai lies in the east of China.
3) 表示格言或警句中。
Pride goes before a fall. 骄者必败。
注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。
例:Columbus proved that the earth is round..
4) 现在时刻的状态、能力、性格、个性。
I dont want so much.
Ann Wang writes good English but does not speak well.
【比较】
1. Now I put the sugar in the cup. 2. I am doing my homework now.
第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用现在进行时。
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