狀語從句和狀語的相互轉換

1、.狀語從句轉換為分詞短語

狀語從句主句和從句一致時，轉換為分詞短語。

After he turned off the TV, he went out of the room. →Having turned off the TV, he went out of the room.

他關閉電視機后走出了房間。

When the city is seen from the mountain, it looks much more beautiful. →Seen from the mountain, the city looks much more beautiful.

從山上看，這座城市看起來更漂亮。

2、狀語從句轉換為獨立主格結構

狀語從句主句和從句不一致，轉換為獨立主格結構。

If weather permits, we’ll have the meeting in the open air. →(With)Weather permitting, we’ll have the meeting in the open air.

如果天氣允許，我們將在室外召開這次會議。

3、狀語從句轉換為介詞短語

由after/before/since/as soon as等引導的時間狀語從句，可改為 after/before/since/on+動名

詞短語結構。當主從句主語一致時，可使用動名詞的復合結構。

Before he dived into the lake, he made a deep breath. →Before diving into the lake, he made a deep breath.

在跳入湖中之前，他深深地吸了一口氣。

可以用來代替狀語從句的常見介詞短語有：because of/at the age of/in spite of/as a result o等。

He is absent today because he is ill →He is absent today because of illness.

他今天缺席是因為生病了。

4、狀語從句轉換為動詞不定式短語

狀語從句還可以根據情況轉換為不定式短語。

He is so strong that he can lift the heavy stone.→He is strong enough to lift the heavy stone.

他很強壯，足以搬動這塊重石。

He was so weak that he couldn’t go a step further. →He was too weak to go a step further.

他太虛弱了，無法再挪動一步。

He stood in the front of the classroom in order that he could see the picture clearly. →He stood in the front of the classroom in order to(so as to/to)see the picture clearly.

他站在教室前面，以便能清楚地看到圖片。

注意主語和狀語的邏輯主語要保持一致性。下列5個句子都是錯誤的，在書面表達中應當避免：

At the age of five, his father died.

To improve your English, reading is necessary.

Being a fine day, we went out for a play.

While waiting for the bus, my wallet missed.

Giving more time, I can do it better.

上述句子的正確表達應當是：

When he was at the age of five, his father died.

To improve your English, you should read a lot.

It being a fine day, we went out for a play.

While waiting for the bus, I lost my wallet.

Given more time, I can do it better.

個別短語如generally speaking(一般來說)、strictly speaking(嚴格地說)、judging from...(依據……判斷)、to tell you the truth(說實話)，作為插入語使用，不受主語和狀語的邏輯主語一致的限制。

To tell you the truth, your conclusion sounds strange.

告訴你實話，你的結論聽起來很奇怪。

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