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助动词be的用法与例句

作者: admin来源: 网络文章 时间: 2021-08-15

I.be作为助动词可以:

1.构成进行时态(be+现在分词)

I am seeing a friend off.

我在给一个朋友送行。

She was telling us a story.

她在给我们讲故事。

He will be leaving tomorrow.

他明天走。

What have you been doing these days?

这些时候你都在干什么?

2.构被动语态(be+过去分词):

These books were published last year.

这些书是去年山版的。

Rice is grown chiefly in the south.

水稻主要在南方种植。

The houses are being rebuilt.

这些房了正在重建。

The plan has been approved.

计划业已批准。

此外还可以和不定式构成复合谓语表示打算做或应该做的事:

Where are we to meet?

我们在哪里碰头?

Who is to pay?

谁付钱?

You're to be back tonight.

你应今晚回来。

The worst was still to come.

最糟糕的情况还在后头。

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