be动词怎么运用?
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be动词是am,is,are.它们的过去式是am,is-was,are-were.
有个口诀:I 后am, you 后are, is跟着他她它,单数后面用 is, 复数后面定用 are . 但是这个只能用在一般现在时
功能一,中心词义是"是",句型为"主+系+表"结构。be的形式常用am, is, are(现在式);was, were(过去式);will/can/may/must be(助动词/情态动词+原形);have/has/had been(助动词+过去分词)等。如:
To help animals is helping people.(一般现在时)
The twins were very busy yesterday.(一般过去时)
It will be sunny tomorrow.(一般将来时)
功能二,助动词be
助动词be,无词义,辅助主要动词一起在句中作谓语动词。用法如下:
1. be+doing:构成进行时态,有现在和过去两种进行时态。如:
The girls is reading and copying the new words now.
2. be+done:构成被动语态(主语是动作的承受者,done必须是及物动词)。如:
Tea is grown in my hometown.(一般现在时的被动语态)
3. be+going to do,表示"打算或将要做某事",be有现在和过去两种形式。如:
We are going to plant trees in the park.
4. be+to do,表示"按计划安排将要做某事"。如:
The new shop is not to be opened till next Monday.
功能三,there be
there be句式为:there be+主语部分+状语部分,表示"某处存在某物",be常用现在时,过去时和将来时等。如:
Oh, cool! And there are many things to see. There is even a deer park in Sanya.
功能四,实义be
可以将be视为实义动词,因为它具有实际的词义,如"成为;做;发生;举行;逗留;到达"等。如:
His daughter wants to be a doctor for animals in her twenties.
有个口诀:I 后am, you 后are, is跟着他她它,单数后面用 is, 复数后面定用 are . 但是这个只能用在一般现在时
功能一,中心词义是"是",句型为"主+系+表"结构。be的形式常用am, is, are(现在式);was, were(过去式);will/can/may/must be(助动词/情态动词+原形);have/has/had been(助动词+过去分词)等。如:
To help animals is helping people.(一般现在时)
The twins were very busy yesterday.(一般过去时)
It will be sunny tomorrow.(一般将来时)
功能二,助动词be
助动词be,无词义,辅助主要动词一起在句中作谓语动词。用法如下:
1. be+doing:构成进行时态,有现在和过去两种进行时态。如:
The girls is reading and copying the new words now.
2. be+done:构成被动语态(主语是动作的承受者,done必须是及物动词)。如:
Tea is grown in my hometown.(一般现在时的被动语态)
3. be+going to do,表示"打算或将要做某事",be有现在和过去两种形式。如:
We are going to plant trees in the park.
4. be+to do,表示"按计划安排将要做某事"。如:
The new shop is not to be opened till next Monday.
功能三,there be
there be句式为:there be+主语部分+状语部分,表示"某处存在某物",be常用现在时,过去时和将来时等。如:
Oh, cool! And there are many things to see. There is even a deer park in Sanya.
功能四,实义be
可以将be视为实义动词,因为它具有实际的词义,如"成为;做;发生;举行;逗留;到达"等。如:
His daughter wants to be a doctor for animals in her twenties.
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告诉你个顺口溜:复数全部都用are is 用于他她它 一单只能用am 二单也用动词are
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教你口诀:我用am,你用are,is他她它。意思就是,主语是我的时候就用am,主语是你的时候就用are,接下来的,你懂了吗?
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