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6. so+ 形容詞/副詞that 的結構狀語從句可以用正常語序表示，也可以把so+形容詞/副詞放于句首構成倒裝。句型如下： so +形容詞/副詞+be/助動詞/情態動詞that +從句。
Light travels so fast that it is difficult for us to imagine its speed.
= So fast does light travel that it is difficult for us to imagine its speed.
So easy was the work that they finished it in a few days.
7. done做形容詞在句中做表語時，常把表語放在句首，要用倒裝句式。
Gone forever are the days when the Chinese people had to use foreign oil.
8. 否定副詞not , never, seldom, nowhere, little , rarely 放于句首時要用倒裝句式。
We seldom get up at four in the morning.
= Seldom do we get up at four in the morning.
Not a single word from him could the enemy drag.
Rarely have I heard of such a silly thing.
9. hardly…when; scarcely…when…; no sooner…than… 可以用正常語序 had hardly done when… did 或用倒裝句式Hardly had + 主語+ done when… did 句式。hardly所在的句子用過去完成時。
The bell hardly had rung when the class began.= Hardly had the bell rung when the class began.
No sooner had he arrived in Beijing than he began to work.
10. not only… but also 如連接兩個成分時，不用倒裝；連接句子時， 前面的句子要用倒裝。
Not only was everything that he had taken away from him, but also his German citizenship.
Not only is he busy, but also I have a lot of work to do.
Not only does he speak English very well, but also he speaks French well.
11. only 及所修飾的副詞、介詞短語或狀語從句放在句首時，要用：
only+ 狀語+ be /助動詞/情態動詞+主語及其他
Only when he told me the news did I know what had happened.
Only in this way can you make progress in your English.
12. 虛擬語氣中的倒裝句
If I were you, I would take the job. = Were I you, I would take the job.
