as if 在虚拟 语气中与be动词的用法

如题所述

与现在事实相反,正式场合用were,口语中也有用was的!
与过去事实相反,用had been
与将来事实相反,用would/could/might be或were to do6
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第1个回答  2016-10-11
as if在虚拟语气中用法:
当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时。从句虚拟语气动词时态的形式如下:
(1)如果从句表示与现在事实相反,谓语动词用一般过去时。如:
You look as if you didn’t care.
你看上去好像并不在乎。
He talks as if he knew where she was.
他说话的样子,好像他知道她在哪里似的。
(2)从句表示与过去事实相反,谓语动词用“had+过去分词”。如:
He talks about Rome as if he had been there before.
他说起罗马来好像他以前去过罗马似的。
The girl listened as if she had been turned to stone.
那女孩倾听着,一动也不动,像已经变成了石头似的。
(3)从句表示与将来事实相反,谓语动词用“would/could/might+动词原形”。如:
He opened his mouth as if he would say something.
他张开嘴好像要说什么。
It looks as if it might snow. 看来好像要下雪了。

be动词的用法
在英语语法中,be动词意思和用法很多,一般的意思是:是,此种用法,有多种变化形式,is,am,are,was,were,being,been,to be.另外,be动词还有成为的意思。根据句子中不同的人称、数和时态,应该选择相应的be动词。
he is, we are, you are, they are (缩略式 I'm, you're, he's, we're, you're, they're), (否定缩略式 I'm not, isn't, aren't), 过去时 I was, you were, he was, we were, you were, they were (过去时否定缩略式 wasn't, weren't),过去分词been,现在分词being
英语的“be”是个特殊动词。
“Be”除了原形的“be”之外,还有另外七种形式:am, is, are, been, being, was, were.
在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb)
第2个回答  2016-10-10
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